{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48862", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-05-25T20:44:10.697Z", "datePublished": "2026-06-02T14:15:10.591Z", "dateUpdated": "2026-06-02T19:14:09.683Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Mint.HTTP2'"], "packageName": "mint", "packageURL": "pkg:hex/mint", "product": "mint", "programFiles": ["lib/mint/http2.ex"], "programRoutines": [{"name": "'Elixir.Mint.HTTP2':handle_push_promise/3"}, {"name": "'Elixir.Mint.HTTP2':decode_push_promise_headers_and_add_response/5"}], "repo": "https://github.com/elixir-mint/mint", "vendor": "elixir-mint", "versions": [{"lessThan": "1.9.0", "status": "affected", "version": "0.2.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Mint.HTTP2'"], "packageName": "elixir-mint/mint", "packageURL": "pkg:github/elixir-mint/mint", "product": "mint", "programFiles": ["lib/mint/http2.ex"], "programRoutines": [{"name": "'Elixir.Mint.HTTP2':handle_push_promise/3"}, {"name": "'Elixir.Mint.HTTP2':decode_push_promise_headers_and_add_response/5"}], "repo": "https://github.com/elixir-mint/mint.git", "vendor": "elixir-mint", "versions": [{"lessThan": "70b97b6a5209fb288b0e04d8e657dda26c59de67", "status": "affected", "version": "65c6394d05a1b8aa4a7461708c3aa173e8d7a5cf", "versionType": "git"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.9.0", "versionStartIncluding": "0.2.0", "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": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client via PUSH_PROMISE flooding.<p>In <tt>lib/mint/http2.ex</tt>, <tt>'Elixir.Mint.HTTP2':decode_push_promise_headers_and_add_response/5</tt> inserts a <tt>:reserved_remote</tt> entry into <tt>conn.streams</tt> for every promised stream ID. 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This makes Mint reject any inbound <tt>PUSH_PROMISE</tt> frame with a <tt>PROTOCOL_ERROR</tt> before the vulnerable code path is reached.</p>"}], "value": "Disable HTTP/2 server push on connections to untrusted servers by passing client_settings: [enable_push: false] to Mint.HTTP.connect/4. 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A single long-lived HTTP/2 connection to a hostile server lets that server pin one conn.streams entry per PUSH_PROMISE frame it sends, with no upper bound, until the client process runs out of memory.\n\nThis issue affects mint: from 0.2.0 before 1.9.0.", "supportingMedia": [{"type": "text/html", "value": "Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client via PUSH_PROMISE flooding.<p>In <tt>lib/mint/http2.ex</tt>, <tt>'Elixir.Mint.HTTP2':decode_push_promise_headers_and_add_response/5</tt> inserts a <tt>:reserved_remote</tt> entry into <tt>conn.streams</tt> for every promised stream ID. The neighbouring <tt>'Elixir.Mint.HTTP2':assert_valid_promised_stream_id/2</tt> only verifies that the promised ID is even and not already present; <tt>client_settings.max_concurrent_streams</tt> is not consulted at promise time. 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A single long-lived HTTP/2 connection to a hostile server lets that server pin one <tt>conn.streams</tt> entry per <tt>PUSH_PROMISE</tt> frame it sends, with no upper bound, until the client process runs out of memory.</p><p>This issue affects mint: from 0.2.0 before 1.9.0.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-770", "description": "CWE-770 Allocation of Resources Without Limits or Throttling"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "1.9.0", "versionStartIncluding": "0.2.0"}], "operator": "OR"}], "operator": "AND"}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-06-02T19:14:09.683Z"}}}, "cveMetadata": {"cveId": "CVE-2026-48862", "state": "PUBLISHED", "dateUpdated": "2026-06-02T19:14:09.683Z", "dateReserved": "2026-05-25T20:44:10.697Z", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "datePublished": "2026-06-02T14:15:10.591Z", "assignerShortName": "EEF"}, "dataVersion": "5.2"}

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