{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105668", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-10-07T22:15:01.885Z", "datePublished": "2026-10-12T15:31:58.926Z", "dateUpdated": "2026-10-16T17:38:34.235Z"}, "containers": {"cna": {"affected": [{"cpes": ["cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Hex.RemoteConverger'", "'Elixir.Hex.Registry.Cooldown'"], "packageName": "hex", "packageURL": "pkg:otp/hex?repository_url=https:%2F%2Fgithub.com%2Fhexpm%2Fhex&vcs_url=repository_url=git%2Bhttps:%2F%2Fgithub.com%2Fhexpm%2Fhex.git", "product": "hex", "programFiles": ["lib/hex/remote_converger.ex", "lib/hex/registry/cooldown.ex"], "programRoutines": [{"name": "'Elixir.Hex.RemoteConverger':build_cooldown_bypass/3"}, {"name": "'Elixir.Hex.RemoteConverger':unsafe_lock_bypass/1"}, {"name": "'Elixir.Hex.Registry.Cooldown':versions/2"}], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [{"lessThan": "2.5.2", "status": "affected", "version": "2.5.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Hex.RemoteConverger'", "'Elixir.Hex.Registry.Cooldown'"], "packageName": "hexpm/hex", "packageURL": "pkg:github/hexpm/hex", "product": "hex", "programFiles": ["lib/hex/remote_converger.ex", "lib/hex/registry/cooldown.ex"], "programRoutines": [{"name": "'Elixir.Hex.RemoteConverger':build_cooldown_bypass/3"}, {"name": "'Elixir.Hex.RemoteConverger':unsafe_lock_bypass/1"}, {"name": "'Elixir.Hex.Registry.Cooldown':versions/2"}], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [{"changes": [{"at": "eed2bdf85320ae9e244629511c03f5f3f8c5d0b5", "status": "unaffected"}, {"at": "1b6fddfeadd98ed26a143f60356efade0494e2ae", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "b4e665d46be8a5f81e8cbbe4c3a67058a19cf133", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Affects projects that set the <code>cooldown</code> config or <code>HEX_COOLDOWN</code> and update dependencies with <code>mix deps.update</code>, or otherwise unlock the package during resolution. Cooldowns enforced through an organization dependency policy aren't affected.</p>"}, {"base64": false, "type": "text/markdown", "value": "Affects projects that set the `cooldown` config or `HEX_COOLDOWN` and update dependencies with `mix deps.update`, or otherwise unlock the package during resolution. Cooldowns enforced through an organization dependency policy aren't affected."}], "value": "Affects projects that set the cooldown config or HEX_COOLDOWN and update dependencies with mix deps.update, or otherwise unlock the package during resolution. Cooldowns enforced through an organization dependency policy aren't affected."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.5.2", "versionStartIncluding": "2.5.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "remediation developer", "value": "Eric Meadows-J\u00f6nsson"}, {"lang": "en", "type": "coordinator", "value": "Eric Meadows-J\u00f6nsson"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}], "dateAssigned": "2026-10-10T13:01:56.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.</p>\n<p>The cooldown (<code>cooldown</code> config, <code>HEX_COOLDOWN</code>) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in <code>mix.lock</code> is retired or has a security advisory, <code>Hex.RemoteConverger.build_cooldown_bypass/3</code> and <code>Hex.RemoteConverger.unsafe_lock_bypass/1</code> lift the cooldown for every version of that package and of every package the locked release depends on, so that <code>mix deps.update</code> can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next <code>mix deps.update</code> that unlocks the package selects the new release regardless of its age. <code>Hex.Registry.Cooldown.versions/2</code> checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.</p>\n<p>This issue affects hex: from 2.5.0 before 2.5.2.</p>"}, {"base64": false, "type": "text/markdown", "value": "Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.\n\nThe cooldown (`cooldown` config, `HEX_COOLDOWN`) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in `mix.lock` is retired or has a security advisory, `Hex.RemoteConverger.build_cooldown_bypass/3` and `Hex.RemoteConverger.unsafe_lock_bypass/1` lift the cooldown for every version of that package and of every package the locked release depends on, so that `mix deps.update` can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next `mix deps.update` that unlocks the package selects the new release regardless of its age. `Hex.Registry.Cooldown.versions/2` checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.\n\nThis issue affects hex: from 2.5.0 before 2.5.2."}], "value": "Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.\n\nThe cooldown (cooldown config, HEX_COOLDOWN) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in mix.lock is retired or has a security advisory, Hex.RemoteConverger.build_cooldown_bypass/3 and Hex.RemoteConverger.unsafe_lock_bypass/1 lift the cooldown for every version of that package and of every package the locked release depends on, so that mix deps.update can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next mix deps.update that unlocks the package selects the new release regardless of its age. Hex.Registry.Cooldown.versions/2 checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.\n\nThis issue affects hex: from 2.5.0 before 2.5.2."}], "impacts": [{"capecId": "CAPEC-538", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The cooldown exists to keep a compromised release out of projects until it can be detected and retired. An attacker who controls a package owner account can defeat it by also retiring the currently locked release, so a malicious release reaches projects that rely on the local cooldown as soon as they run <code>mix deps.update</code>, including automated dependency update jobs. The malicious release's code then runs when the dependency is compiled.</p>"}, {"base64": false, "type": "text/markdown", "value": "The cooldown exists to keep a compromised release out of projects until it can be detected and retired. An attacker who controls a package owner account can defeat it by also retiring the currently locked release, so a malicious release reaches projects that rely on the local cooldown as soon as they run `mix deps.update`, including automated dependency update jobs. The malicious release's code then runs when the dependency is compiled."}], "value": "The cooldown exists to keep a compromised release out of projects until it can be detected and retired. An attacker who controls a package owner account can defeat it by also retiring the currently locked release, so a malicious release reaches projects that rely on the local cooldown as soon as they run mix deps.update, including automated dependency update jobs. The malicious release's code then runs when the dependency is compiled."}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 7.1, "baseSeverity": "HIGH", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-693", "description": "CWE-693 Protection Mechanism Failure", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-10-12T15:31:58.926Z"}, "references": [{"name": "GitHub Advisory", "tags": ["related", "vendor-advisory"], "url": "https://github.com/hexpm/hex/security/advisories/GHSA-pqhp-5x9x-69h7"}, {"name": "EEF CNA record for CVE-2026-105668", "tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-105668.html"}, {"name": "OSV record EEF-CVE-2026-105668", "tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-105668"}, {"name": "Introducing commit b4e665d in hexpm/hex", "tags": ["related"], "url": "https://github.com/hexpm/hex/commit/b4e665d46be8a5f81e8cbbe4c3a67058a19cf133"}, {"name": "Fix commit eed2bdf in hexpm/hex", "tags": ["patch"], "url": "https://github.com/hexpm/hex/commit/eed2bdf85320ae9e244629511c03f5f3f8c5d0b5"}, {"name": "Fix commit 1b6fddf in hexpm/hex", "tags": ["patch"], "url": "https://github.com/hexpm/hex/commit/1b6fddfeadd98ed26a143f60356efade0494e2ae"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Upgrade Hex to 2.5.2 or later, for example with <code>mix local.hex</code>. A retired locked release then no longer lifts the release-age cooldown for its package. A locked release with a security advisory still lifts it for its package and the direct dependencies of the locked release, only in the repository the package is locked from.</p>"}, {"base64": false, "type": "text/markdown", "value": "Upgrade Hex to 2.5.2 or later, for example with `mix local.hex`. A retired locked release then no longer lifts the release-age cooldown for its package. A locked release with a security advisory still lifts it for its package and the direct dependencies of the locked release, only in the repository the package is locked from."}], "value": "Upgrade Hex to 2.5.2 or later, for example with mix local.hex. A retired locked release then no longer lifts the release-age cooldown for its package. A locked release with a security advisory still lifts it for its package and the direct dependencies of the locked release, only in the repository the package is locked from."}], "source": {"discovery": "UNKNOWN"}, "title": "Hex release-age cooldown is lifted package-wide when the locked release is retired", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Enforce the cooldown through an organization dependency policy instead of the local <code>cooldown</code> setting, or run <code>mix hex.audit</code> before <code>mix deps.update</code> and don't update a package whose locked release was retired until its replacement has been reviewed.</p>"}, {"base64": false, "type": "text/markdown", "value": "Enforce the cooldown through an organization dependency policy instead of the local `cooldown` setting, or run `mix hex.audit` before `mix deps.update` and don't update a package whose locked release was retired until its replacement has been reviewed."}], "value": "Enforce the cooldown through an organization dependency policy instead of the local cooldown setting, or run mix hex.audit before mix deps.update and don't update a package whose locked release was retired until its replacement has been reviewed."}], "x_proofOfConcept": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<ol>\n<li>Lock <code>foo 1.0.0</code> in a project with <code>HEX_COOLDOWN=7d</code>.</li>\n<li>Publish <code>foo 1.0.1</code>; <code>mix deps.update foo</code> reports it as filtered by cooldown and keeps 1.0.0.</li>\n<li>Retire <code>foo 1.0.0</code>.</li>\n<li>Run <code>mix deps.update foo</code> again; it upgrades to the 1-hour-old 1.0.1.</li>\n</ol>"}, {"base64": false, "type": "text/markdown", "value": "1. Lock `foo 1.0.0` in a project with `HEX_COOLDOWN=7d`.\n2. Publish `foo 1.0.1`; `mix deps.update foo` reports it as filtered by cooldown and keeps 1.0.0.\n3. Retire `foo 1.0.0`.\n4. Run `mix deps.update foo` again; it upgrades to the 1-hour-old 1.0.1."}], "value": "* Lock foo 1.0.0 in a project with HEX_COOLDOWN=7d.\n* Publish foo 1.0.1; mix deps.update foo reports it as filtered by cooldown and keeps 1.0.0.\n* Retire foo 1.0.0.\n* Run mix deps.update foo again; it upgrades to the 1-hour-old 1.0.1."}], "x_technicalAnalysis": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<ol>\n<li><code>Hex.RemoteConverger.build_cooldown_bypass/3</code> adds <code>unsafe_lock_bypass(old_lock)</code> to the set of packages exempt from the cooldown.</li>\n<li><code>unsafe_lock_bypass/1</code> adds a package's name, and the names of its locked children, whenever <code>Registry.retired/3</code> or <code>Registry.advisories/3</code> reports the locked version as unsafe.</li>\n<li><code>Hex.Registry.Cooldown.versions/2</code> returns every version unfiltered for any package name in that set, so freshly published versions become eligible as soon as the package is unlocked.</li>\n<li>hex.pm lets the package owner retire any of their releases, so the owner controls the trigger. <code>Hex.Policy.Filter</code> applies policy cooldowns without consulting the bypass set.</li>\n</ol>"}, {"base64": false, "type": "text/markdown", "value": "1. `Hex.RemoteConverger.build_cooldown_bypass/3` adds `unsafe_lock_bypass(old_lock)` to the set of packages exempt from the cooldown.\n2. `unsafe_lock_bypass/1` adds a package's name, and the names of its locked children, whenever `Registry.retired/3` or `Registry.advisories/3` reports the locked version as unsafe.\n3. `Hex.Registry.Cooldown.versions/2` returns every version unfiltered for any package name in that set, so freshly published versions become eligible as soon as the package is unlocked.\n4. hex.pm lets the package owner retire any of their releases, so the owner controls the trigger. `Hex.Policy.Filter` applies policy cooldowns without consulting the bypass set."}], "value": "* Hex.RemoteConverger.build_cooldown_bypass/3 adds unsafe_lock_bypass(old_lock) to the set of packages exempt from the cooldown.\n* unsafe_lock_bypass/1 adds a package's name, and the names of its locked children, whenever Registry.retired/3 or Registry.advisories/3 reports the locked version as unsafe.\n* Hex.Registry.Cooldown.versions/2 returns every version unfiltered for any package name in that set, so freshly published versions become eligible as soon as the package is unlocked.\n* hex.pm lets the package owner retire any of their releases, so the owner controls the trigger. Hex.Policy.Filter applies policy cooldowns without consulting the bypass set."}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-16T17:37:56.690913Z", "id": "CVE-2026-105668", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T17:38:34.235Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105668", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-10-07T22:15:01.885Z", "datePublished": "2026-10-12T15:31:58.926Z", "dateUpdated": "2026-10-16T17:38:34.235Z"}, "containers": {"cna": {"affected": [{"cpes": ["cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Hex.RemoteConverger'", "'Elixir.Hex.Registry.Cooldown'"], "packageName": "hex", "packageURL": "pkg:otp/hex?repository_url=https:%2F%2Fgithub.com%2Fhexpm%2Fhex&vcs_url=repository_url=git%2Bhttps:%2F%2Fgithub.com%2Fhexpm%2Fhex.git", "product": "hex", "programFiles": ["lib/hex/remote_converger.ex", "lib/hex/registry/cooldown.ex"], "programRoutines": [{"name": "'Elixir.Hex.RemoteConverger':build_cooldown_bypass/3"}, {"name": "'Elixir.Hex.RemoteConverger':unsafe_lock_bypass/1"}, {"name": "'Elixir.Hex.Registry.Cooldown':versions/2"}], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [{"lessThan": "2.5.2", "status": "affected", "version": "2.5.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Hex.RemoteConverger'", "'Elixir.Hex.Registry.Cooldown'"], "packageName": "hexpm/hex", "packageURL": "pkg:github/hexpm/hex", "product": "hex", "programFiles": ["lib/hex/remote_converger.ex", "lib/hex/registry/cooldown.ex"], "programRoutines": [{"name": "'Elixir.Hex.RemoteConverger':build_cooldown_bypass/3"}, {"name": "'Elixir.Hex.RemoteConverger':unsafe_lock_bypass/1"}, {"name": "'Elixir.Hex.Registry.Cooldown':versions/2"}], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [{"changes": [{"at": "eed2bdf85320ae9e244629511c03f5f3f8c5d0b5", "status": "unaffected"}, {"at": "1b6fddfeadd98ed26a143f60356efade0494e2ae", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "b4e665d46be8a5f81e8cbbe4c3a67058a19cf133", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Affects projects that set the <code>cooldown</code> config or <code>HEX_COOLDOWN</code> and update dependencies with <code>mix deps.update</code>, or otherwise unlock the package during resolution. Cooldowns enforced through an organization dependency policy aren't affected.</p>"}, {"base64": false, "type": "text/markdown", "value": "Affects projects that set the `cooldown` config or `HEX_COOLDOWN` and update dependencies with `mix deps.update`, or otherwise unlock the package during resolution. Cooldowns enforced through an organization dependency policy aren't affected."}], "value": "Affects projects that set the cooldown config or HEX_COOLDOWN and update dependencies with mix deps.update, or otherwise unlock the package during resolution. Cooldowns enforced through an organization dependency policy aren't affected."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.5.2", "versionStartIncluding": "2.5.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "remediation developer", "value": "Eric Meadows-J\u00f6nsson"}, {"lang": "en", "type": "coordinator", "value": "Eric Meadows-J\u00f6nsson"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}], "dateAssigned": "2026-10-10T13:01:56.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.</p>\n<p>The cooldown (<code>cooldown</code> config, <code>HEX_COOLDOWN</code>) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in <code>mix.lock</code> is retired or has a security advisory, <code>Hex.RemoteConverger.build_cooldown_bypass/3</code> and <code>Hex.RemoteConverger.unsafe_lock_bypass/1</code> lift the cooldown for every version of that package and of every package the locked release depends on, so that <code>mix deps.update</code> can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next <code>mix deps.update</code> that unlocks the package selects the new release regardless of its age. <code>Hex.Registry.Cooldown.versions/2</code> checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.</p>\n<p>This issue affects hex: from 2.5.0 before 2.5.2.</p>"}, {"base64": false, "type": "text/markdown", "value": "Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.\n\nThe cooldown (`cooldown` config, `HEX_COOLDOWN`) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in `mix.lock` is retired or has a security advisory, `Hex.RemoteConverger.build_cooldown_bypass/3` and `Hex.RemoteConverger.unsafe_lock_bypass/1` lift the cooldown for every version of that package and of every package the locked release depends on, so that `mix deps.update` can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next `mix deps.update` that unlocks the package selects the new release regardless of its age. `Hex.Registry.Cooldown.versions/2` checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.\n\nThis issue affects hex: from 2.5.0 before 2.5.2."}], "value": "Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.\n\nThe cooldown (cooldown config, HEX_COOLDOWN) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in mix.lock is retired or has a security advisory, Hex.RemoteConverger.build_cooldown_bypass/3 and Hex.RemoteConverger.unsafe_lock_bypass/1 lift the cooldown for every version of that package and of every package the locked release depends on, so that mix deps.update can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next mix deps.update that unlocks the package selects the new release regardless of its age. Hex.Registry.Cooldown.versions/2 checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.\n\nThis issue affects hex: from 2.5.0 before 2.5.2."}], "impacts": [{"capecId": "CAPEC-538", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The cooldown exists to keep a compromised release out of projects until it can be detected and retired. An attacker who controls a package owner account can defeat it by also retiring the currently locked release, so a malicious release reaches projects that rely on the local cooldown as soon as they run <code>mix deps.update</code>, including automated dependency update jobs. The malicious release's code then runs when the dependency is compiled.</p>"}, {"base64": false, "type": "text/markdown", "value": "The cooldown exists to keep a compromised release out of projects until it can be detected and retired. An attacker who controls a package owner account can defeat it by also retiring the currently locked release, so a malicious release reaches projects that rely on the local cooldown as soon as they run `mix deps.update`, including automated dependency update jobs. The malicious release's code then runs when the dependency is compiled."}], "value": "The cooldown exists to keep a compromised release out of projects until it can be detected and retired. An attacker who controls a package owner account can defeat it by also retiring the currently locked release, so a malicious release reaches projects that rely on the local cooldown as soon as they run mix deps.update, including automated dependency update jobs. The malicious release's code then runs when the dependency is compiled."}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 7.1, "baseSeverity": "HIGH", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-693", "description": "CWE-693 Protection Mechanism Failure", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-10-12T15:31:58.926Z"}, "references": [{"name": "GitHub Advisory", "tags": ["related", "vendor-advisory"], "url": "https://github.com/hexpm/hex/security/advisories/GHSA-pqhp-5x9x-69h7"}, {"name": "EEF CNA record for CVE-2026-105668", "tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-105668.html"}, {"name": "OSV record EEF-CVE-2026-105668", "tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-105668"}, {"name": "Introducing commit b4e665d in hexpm/hex", "tags": ["related"], "url": "https://github.com/hexpm/hex/commit/b4e665d46be8a5f81e8cbbe4c3a67058a19cf133"}, {"name": "Fix commit eed2bdf in hexpm/hex", "tags": ["patch"], "url": "https://github.com/hexpm/hex/commit/eed2bdf85320ae9e244629511c03f5f3f8c5d0b5"}, {"name": "Fix commit 1b6fddf in hexpm/hex", "tags": ["patch"], "url": "https://github.com/hexpm/hex/commit/1b6fddfeadd98ed26a143f60356efade0494e2ae"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Upgrade Hex to 2.5.2 or later, for example with <code>mix local.hex</code>. A retired locked release then no longer lifts the release-age cooldown for its package. A locked release with a security advisory still lifts it for its package and the direct dependencies of the locked release, only in the repository the package is locked from.</p>"}, {"base64": false, "type": "text/markdown", "value": "Upgrade Hex to 2.5.2 or later, for example with `mix local.hex`. A retired locked release then no longer lifts the release-age cooldown for its package. A locked release with a security advisory still lifts it for its package and the direct dependencies of the locked release, only in the repository the package is locked from."}], "value": "Upgrade Hex to 2.5.2 or later, for example with mix local.hex. A retired locked release then no longer lifts the release-age cooldown for its package. A locked release with a security advisory still lifts it for its package and the direct dependencies of the locked release, only in the repository the package is locked from."}], "source": {"discovery": "UNKNOWN"}, "title": "Hex release-age cooldown is lifted package-wide when the locked release is retired", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Enforce the cooldown through an organization dependency policy instead of the local <code>cooldown</code> setting, or run <code>mix hex.audit</code> before <code>mix deps.update</code> and don't update a package whose locked release was retired until its replacement has been reviewed.</p>"}, {"base64": false, "type": "text/markdown", "value": "Enforce the cooldown through an organization dependency policy instead of the local `cooldown` setting, or run `mix hex.audit` before `mix deps.update` and don't update a package whose locked release was retired until its replacement has been reviewed."}], "value": "Enforce the cooldown through an organization dependency policy instead of the local cooldown setting, or run mix hex.audit before mix deps.update and don't update a package whose locked release was retired until its replacement has been reviewed."}], "x_proofOfConcept": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<ol>\n<li>Lock <code>foo 1.0.0</code> in a project with <code>HEX_COOLDOWN=7d</code>.</li>\n<li>Publish <code>foo 1.0.1</code>; <code>mix deps.update foo</code> reports it as filtered by cooldown and keeps 1.0.0.</li>\n<li>Retire <code>foo 1.0.0</code>.</li>\n<li>Run <code>mix deps.update foo</code> again; it upgrades to the 1-hour-old 1.0.1.</li>\n</ol>"}, {"base64": false, "type": "text/markdown", "value": "1. Lock `foo 1.0.0` in a project with `HEX_COOLDOWN=7d`.\n2. Publish `foo 1.0.1`; `mix deps.update foo` reports it as filtered by cooldown and keeps 1.0.0.\n3. Retire `foo 1.0.0`.\n4. Run `mix deps.update foo` again; it upgrades to the 1-hour-old 1.0.1."}], "value": "* Lock foo 1.0.0 in a project with HEX_COOLDOWN=7d.\n* Publish foo 1.0.1; mix deps.update foo reports it as filtered by cooldown and keeps 1.0.0.\n* Retire foo 1.0.0.\n* Run mix deps.update foo again; it upgrades to the 1-hour-old 1.0.1."}], "x_technicalAnalysis": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<ol>\n<li><code>Hex.RemoteConverger.build_cooldown_bypass/3</code> adds <code>unsafe_lock_bypass(old_lock)</code> to the set of packages exempt from the cooldown.</li>\n<li><code>unsafe_lock_bypass/1</code> adds a package's name, and the names of its locked children, whenever <code>Registry.retired/3</code> or <code>Registry.advisories/3</code> reports the locked version as unsafe.</li>\n<li><code>Hex.Registry.Cooldown.versions/2</code> returns every version unfiltered for any package name in that set, so freshly published versions become eligible as soon as the package is unlocked.</li>\n<li>hex.pm lets the package owner retire any of their releases, so the owner controls the trigger. <code>Hex.Policy.Filter</code> applies policy cooldowns without consulting the bypass set.</li>\n</ol>"}, {"base64": false, "type": "text/markdown", "value": "1. `Hex.RemoteConverger.build_cooldown_bypass/3` adds `unsafe_lock_bypass(old_lock)` to the set of packages exempt from the cooldown.\n2. `unsafe_lock_bypass/1` adds a package's name, and the names of its locked children, whenever `Registry.retired/3` or `Registry.advisories/3` reports the locked version as unsafe.\n3. `Hex.Registry.Cooldown.versions/2` returns every version unfiltered for any package name in that set, so freshly published versions become eligible as soon as the package is unlocked.\n4. hex.pm lets the package owner retire any of their releases, so the owner controls the trigger. `Hex.Policy.Filter` applies policy cooldowns without consulting the bypass set."}], "value": "* Hex.RemoteConverger.build_cooldown_bypass/3 adds unsafe_lock_bypass(old_lock) to the set of packages exempt from the cooldown.\n* unsafe_lock_bypass/1 adds a package's name, and the names of its locked children, whenever Registry.retired/3 or Registry.advisories/3 reports the locked version as unsafe.\n* Hex.Registry.Cooldown.versions/2 returns every version unfiltered for any package name in that set, so freshly published versions become eligible as soon as the package is unlocked.\n* hex.pm lets the package owner retire any of their releases, so the owner controls the trigger. Hex.Policy.Filter applies policy cooldowns without consulting the bypass set."}]}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-105668", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T17:37:56.690913Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T17:38:21.226Z"}}]}}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Hex.RemoteConverger'", "'Elixir.Hex.Registry.Cooldown'"], "packageName": "hex", "packageURL": "pkg:otp/hex?repository_url=https:%2F%2Fgithub.com%2Fhexpm%2Fhex&vcs_url=repository_url=git%2Bhttps:%2F%2Fgithub.com%2Fhexpm%2Fhex.git", "product": "hex", "programFiles": ["lib/hex/remote_converger.ex", "lib/hex/registry/cooldown.ex"], "programRoutines": [{"name": "'Elixir.Hex.RemoteConverger':build_cooldown_bypass/3"}, {"name": "'Elixir.Hex.RemoteConverger':unsafe_lock_bypass/1"}, {"name": "'Elixir.Hex.Registry.Cooldown':versions/2"}], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [{"lessThan": "2.5.2", "status": "affected", "version": "2.5.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Hex.RemoteConverger'", "'Elixir.Hex.Registry.Cooldown'"], "packageName": "hexpm/hex", "packageURL": "pkg:github/hexpm/hex", "product": "hex", "programFiles": ["lib/hex/remote_converger.ex", "lib/hex/registry/cooldown.ex"], "programRoutines": [{"name": "'Elixir.Hex.RemoteConverger':build_cooldown_bypass/3"}, {"name": "'Elixir.Hex.RemoteConverger':unsafe_lock_bypass/1"}, {"name": "'Elixir.Hex.Registry.Cooldown':versions/2"}], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [{"changes": [{"at": "eed2bdf85320ae9e244629511c03f5f3f8c5d0b5", "status": "unaffected"}, {"at": "1b6fddfeadd98ed26a143f60356efade0494e2ae", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "b4e665d46be8a5f81e8cbbe4c3a67058a19cf133", "versionType": "git"}]}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.\n\nThe cooldown (cooldown config, HEX_COOLDOWN) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in mix.lock is retired or has a security advisory, Hex.RemoteConverger.build_cooldown_bypass/3 and Hex.RemoteConverger.unsafe_lock_bypass/1 lift the cooldown for every version of that package and of every package the locked release depends on, so that mix deps.update can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next mix deps.update that unlocks the package selects the new release regardless of its age. Hex.Registry.Cooldown.versions/2 checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.\n\nThis issue affects hex: from 2.5.0 before 2.5.2."}], "id": "CVE-2026-105668", "lastModified": "2026-10-16T18:17:23.523", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-105668", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T17:37:56.690913Z", "version": "2.0.3"}}]}, "published": "2026-10-12T16:17:02.943", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://cna.erlef.org/cves/CVE-2026-105668.html"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/hexpm/hex/commit/1b6fddfeadd98ed26a143f60356efade0494e2ae"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/hexpm/hex/commit/b4e665d46be8a5f81e8cbbe4c3a67058a19cf133"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/hexpm/hex/commit/eed2bdf85320ae9e244629511c03f5f3f8c5d0b5"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/hexpm/hex/security/advisories/GHSA-pqhp-5x9x-69h7"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://osv.dev/vulnerability/EEF-CVE-2026-105668"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

{"bugzilla": {"description": "hex: hex: Release cooldown protection bypass via retired package releases", "id": "2549707", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2549707"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-807", "details": ["Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown.\nThe cooldown (cooldown config, HEX_COOLDOWN) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in mix.lock is retired or has a security advisory, Hex.RemoteConverger.build_cooldown_bypass/3 and Hex.RemoteConverger.unsafe_lock_bypass/1 lift the cooldown for every version of that package and of every package the locked release depends on, so that mix deps.update can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next mix deps.update that unlocks the package selects the new release regardless of its age. Hex.Registry.Cooldown.versions/2 checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected.\nThis issue affects hex: from 2.5.0 before 2.5.2.", "A flaw was found in hex. This vulnerability allows an attacker with package owner privileges to bypass release-age cooldown security controls when publishing a new package release. By retiring an existing package release, the attacker triggers an automatic cooldown bypass, causing downstream dependency updates to immediately pull the newly published release without observing the required waiting period. Consequently, this flaw can enable the rapid deployment of unvetted or malicious dependencies into downstream environments."], "mitigation": {"lang": "en:us", "value": "Workarounds are available. Enforce the cooldown through a Hex organization dependency policy instead of the local `cooldown` setting or `HEX_COOLDOWN` environment variable, since policy-based cooldowns do not consult the bypass set and are not affected. Alternatively, run `mix hex.audit` before `mix deps.update` and do not update a package whose locked release was retired until its replacement release has been reviewed. Upgrading to the fixed upstream Hex release (2.5.2 or later) resolves the issue; for the tracked community Fedora and EPEL streams, apply updated packages once the community maintainers ship them."}, "name": "CVE-2026-105668", "public_date": "2026-10-12T15:31:58Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-105668\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-105668\nhttps://cna.erlef.org/cves/CVE-2026-105668.html\nhttps://github.com/hexpm/hex/commit/1b6fddfeadd98ed26a143f60356efade0494e2ae\nhttps://github.com/hexpm/hex/commit/b4e665d46be8a5f81e8cbbe4c3a67058a19cf133\nhttps://github.com/hexpm/hex/commit/eed2bdf85320ae9e244629511c03f5f3f8c5d0b5\nhttps://github.com/hexpm/hex/security/advisories/GHSA-pqhp-5x9x-69h7\nhttps://osv.dev/vulnerability/EEF-CVE-2026-105668"], "statement": "A flaw of moderate impact was found in hex, the package manager for the Elixir/Erlang ecosystem, which Red Hat tracks only in its community Fedora and EPEL streams. Hex's release-age cooldown (the `cooldown` config option or `HEX_COOLDOWN` environment variable) withholds versions younger than the configured age during dependency resolution so that newly published, potentially malicious releases are not pulled into projects immediately. When the release of a package locked in `mix.lock` is retired or carries a security advisory, `Hex.RemoteConverger.build_cooldown_bypass/3` and `Hex.RemoteConverger.unsafe_lock_bypass/1` lift the cooldown for every version of that package and of every package the locked release depends on. Because retiring a release requires the same package owner permission as publishing one, an attacker who controls or has compromised a package owner account can publish a malicious release, retire the currently locked release, and have the next `mix deps.update` that unlocks the package select the new release regardless of its age, enabling the rapid deployment of unvetted or malicious dependency code into downstream environments. The bypass check in `Hex.Registry.Cooldown.versions/2` matches by package name alone, so it also covers packages with the same name in other repositories; cooldowns enforced through an organization dependency policy are not affected. Exploitation requires high privileges (package owner) and user interaction (a victim running a dependency update), which is why Red Hat rates this flaw Moderate with a CVSS 3.1 score of 6.8, while the upstream CVEORG record scores it Important at CVSS 4.0 score 7.1; the difference stems from CVSS version and metric differences (attack complexity and user interaction) rather than a substantive disagreement about impact. No Red Hat-shipped products are affected; the tracked Fedora and EPEL community entries are affected with delegated resolution, meaning a fix is being pursued through the community maintainers.", "threat_severity": "Moderate"}