{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-107174", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-10-07T12:26:30.460Z", "datePublished": "2026-10-07T14:34:51.439Z", "dateUpdated": "2026-10-07T16:17:28.174Z"}, "containers": {"cna": {"title": "Source-to-image: source-to-image: security boundary bypass via absolute symbolic link extraction", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in source-to-image. When unpacking archive files, the application fails to properly sanitize symbolic links pointing to absolute file paths. An attacker who supplies a malicious builder image can exploit this vulnerability by embedding links pointing outside the extraction directory. This allows the attacker to bypass sandbox boundaries, potentially leading to unauthorized information disclosure or file modification on the host system."}], "affected": [{"vendor": "Red Hat", "product": "OpenShift Serverless", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift-serverless-1/kn-client-kn-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:serverless:1"]}, {"vendor": "Red Hat", "product": "OpenShift Serverless", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift-serverless-1/kn-plugin-func-func-util-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:serverless:1"]}, {"vendor": "Red Hat", "product": "OpenShift Serverless", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift-serverless-clients", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:serverless:1"]}, {"vendor": "Red Hat", "product": "OpenShift Source-to-Image (S2I)", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "source-to-image/source-to-image-rhel8", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:source_to_image:1"]}, {"vendor": "Red Hat", "product": "OpenShift Source-to-Image (S2I)", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "source-to-image/source-to-image-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:source_to_image:1"]}, {"vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift4/ose-docker-builder", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}, {"vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift4/ose-docker-builder-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}, {"vendor": "Red Hat", "product": "Red Hat Web Terminal", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "web-terminal/web-terminal-tooling-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:webterminal:1"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-107174", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547419", "name": "RHBZ#2547419", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-10-07T12:58:45.168Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-61", "description": "UNIX Symbolic Link (Symlink) Following", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-61: UNIX Symbolic Link (Symlink) Following", "workarounds": [{"lang": "en", "value": "Treat s2i builder images and application source as trusted inputs. Do not run s2i-based builds against builder images or repositories you do not control or have not verified.\n\nWhere possible, run builds on isolated build nodes and restrict who can trigger builds or change BuildConfig and image stream references that point at custom builder images.\n\nThere is no configuration option to disable only this symlink extraction behavior without changing how builds are performed. Apply updated source-to-image packages or rebuilt platform images when Red Hat publishes them for your product and stream."}], "timeline": [{"lang": "en", "time": "2026-10-07T12:27:13.541Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-10-07T12:58:45.168Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Yashashree Gund for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-10-07T14:34:51.439Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-07T16:17:10.638072Z", "id": "CVE-2026-107174", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T16:17:28.174Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-107174", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-07T16:17:10.638072Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T16:17:21.329Z"}}], "cna": {"title": "Source-to-image: source-to-image: security boundary bypass via absolute symbolic link extraction", "credits": [{"lang": "en", "value": "Red Hat would like to thank Yashashree Gund for reporting this issue."}], "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}}], "affected": [{"cpes": ["cpe:/a:redhat:serverless:1"], "vendor": "Red Hat", "product": "OpenShift Serverless", "packageName": "openshift-serverless-1/kn-client-kn-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:serverless:1"], "vendor": "Red Hat", "product": "OpenShift Serverless", "packageName": "openshift-serverless-1/kn-plugin-func-func-util-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:serverless:1"], "vendor": "Red Hat", "product": "OpenShift Serverless", "packageName": "openshift-serverless-clients", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:source_to_image:1"], "vendor": "Red Hat", "product": "OpenShift Source-to-Image (S2I)", "packageName": "source-to-image/source-to-image-rhel8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:source_to_image:1"], "vendor": "Red Hat", "product": "OpenShift Source-to-Image (S2I)", "packageName": "source-to-image/source-to-image-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift:4"], "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "packageName": "openshift4/ose-docker-builder", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift:4"], "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "packageName": "openshift4/ose-docker-builder-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:webterminal:1"], "vendor": "Red Hat", "product": "Red Hat Web Terminal", "packageName": "web-terminal/web-terminal-tooling-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}], "timeline": [{"lang": "en", "time": "2026-10-07T12:27:13.541Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-10-07T12:58:45.168Z", "value": "Made public."}], "datePublic": "2026-10-07T12:58:45.168Z", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-107174", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547419", "name": "RHBZ#2547419", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "workarounds": [{"lang": "en", "value": "Treat s2i builder images and application source as trusted inputs. Do not run s2i-based builds against builder images or repositories you do not control or have not verified.\n\nWhere possible, run builds on isolated build nodes and restrict who can trigger builds or change BuildConfig and image stream references that point at custom builder images.\n\nThere is no configuration option to disable only this symlink extraction behavior without changing how builds are performed. Apply updated source-to-image packages or rebuilt platform images when Red Hat publishes them for your product and stream."}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "A flaw was found in source-to-image. When unpacking archive files, the application fails to properly sanitize symbolic links pointing to absolute file paths. An attacker who supplies a malicious builder image can exploit this vulnerability by embedding links pointing outside the extraction directory. This allows the attacker to bypass sandbox boundaries, potentially leading to unauthorized information disclosure or file modification on the host system."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-61", "description": "UNIX Symbolic Link (Symlink) Following"}]}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-10-07T14:34:51.439Z"}, "x_redhatCweChain": "CWE-61: UNIX Symbolic Link (Symlink) Following"}}, "cveMetadata": {"cveId": "CVE-2026-107174", "state": "PUBLISHED", "dateUpdated": "2026-10-07T16:17:28.174Z", "dateReserved": "2026-10-07T12:26:30.460Z", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "datePublished": "2026-10-07T14:34:51.439Z", "assignerShortName": "redhat"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:serverless:1"], "defaultStatus": "affected", "packageName": "openshift-serverless-1/kn-client-kn-rhel9", "product": "OpenShift Serverless", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:serverless:1"], "defaultStatus": "affected", "packageName": "openshift-serverless-1/kn-plugin-func-func-util-rhel9", "product": "OpenShift Serverless", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:serverless:1"], "defaultStatus": "affected", "packageName": "openshift-serverless-clients", "product": "OpenShift Serverless", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:source_to_image:1"], "defaultStatus": "affected", "packageName": "source-to-image/source-to-image-rhel8", "product": "OpenShift Source-to-Image (S2I)", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:source_to_image:1"], "defaultStatus": "affected", "packageName": "source-to-image/source-to-image-rhel9", "product": "OpenShift Source-to-Image (S2I)", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift:4"], "defaultStatus": "affected", "packageName": "openshift4/ose-docker-builder", "product": "Red Hat OpenShift Container Platform 4", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift:4"], "defaultStatus": "affected", "packageName": "openshift4/ose-docker-builder-rhel9", "product": "Red Hat OpenShift Container Platform 4", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:webterminal:1"], "defaultStatus": "affected", "packageName": "web-terminal/web-terminal-tooling-rhel9", "product": "Red Hat Web Terminal", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in source-to-image. When unpacking archive files, the application fails to properly sanitize symbolic links pointing to absolute file paths. An attacker who supplies a malicious builder image can exploit this vulnerability by embedding links pointing outside the extraction directory. This allows the attacker to bypass sandbox boundaries, potentially leading to unauthorized information disclosure or file modification on the host system."}], "id": "CVE-2026-107174", "lastModified": "2026-10-07T17:16:53.380", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-107174", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-07T16:17:10.638072Z", "version": "2.0.3"}}]}, "published": "2026-10-07T15:17:19.190", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-107174"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547419"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-61"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Yashashree Gund for reporting this issue.", "bugzilla": {"description": "source-to-image: source-to-image: Security boundary bypass via absolute symbolic link extraction", "id": "2547419", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547419"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-61", "details": ["A flaw was found in source-to-image. When unpacking archive files, the application fails to properly sanitize symbolic links pointing to absolute file paths. An attacker who supplies a malicious builder image can exploit this vulnerability by embedding links pointing outside the extraction directory. This allows the attacker to bypass sandbox boundaries, potentially leading to unauthorized information disclosure or file modification on the host system."], "mitigation": {"lang": "en:us", "value": "Treat s2i builder images and application source as trusted inputs. Do not run s2i-based builds against builder images or repositories you do not control or have not verified.\nWhere possible, run builds on isolated build nodes and restrict who can trigger builds or change BuildConfig and image stream references that point at custom builder images.\nThere is no configuration option to disable only this symlink extraction behavior without changing how builds are performed. Apply updated source-to-image packages or rebuilt platform images when Red Hat publishes them for your product and stream."}, "name": "CVE-2026-107174", "package_state": [{"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Fix deferred", "package_name": "openshift-serverless-1/kn-client-kn-rhel9", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Fix deferred", "package_name": "openshift-serverless-1/kn-plugin-func-func-util-rhel9", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Fix deferred", "package_name": "openshift-serverless-clients", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:source_to_image:1", "fix_state": "Fix deferred", "package_name": "source-to-image/source-to-image-rhel8", "product_name": "OpenShift Source-to-Image (S2I)"}, {"cpe": "cpe:/a:redhat:source_to_image:1", "fix_state": "Fix deferred", "package_name": "source-to-image/source-to-image-rhel9", "product_name": "OpenShift Source-to-Image (S2I)"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift4/ose-docker-builder", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift4/ose-docker-builder-rhel9", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:webterminal:1", "fix_state": "Fix deferred", "package_name": "web-terminal/web-terminal-tooling-rhel9", "product_name": "Red Hat Web Terminal"}], "public_date": "2026-10-07T12:58:45Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-107174\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-107174"], "statement": "A flaw was found in the source-to-image (s2i) tool used during container image builds. When s2i extracts a tar archive in its restricted (\"paranoid\") mode, symlink entries are validated using a computed path, but the symlink is still created using the raw target from the archive. If that target is an absolute path, the check can succeed while the symlink on disk points outside the intended extraction directory. This weakens the containment that was introduced for an earlier tar extraction issue (CVE-2018-1103).\nAn attacker who can supply or influence the tar content used during an s2i build (for example through a malicious or compromised builder image or build scripts such as assemble or save-artifacts) may cause symlinks to be written that reference arbitrary locations on the build host filesystem. Further impact depends on whether later build steps follow those symlinks.\nThis issue affects Red Hat offerings that ship or embed source-to-image for builds, including Red Hat OpenShift Container Platform 4.12 through 4.22, the source-to-image container images, and select related products identified in this flaw record.\nRed Hat is evaluating fixes for affected products. Customers should only use trusted builder images and trusted application source for s2i-based builds until an updated source-to-image version is available in their environment.", "threat_severity": "Moderate"}