CVE-2026-125110

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-125110", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-09T17:45:35.935Z", "datePublished": "2026-11-09T22:00:40.811Z", "dateUpdated": "2026-11-09T22:00:40.811Z"}, "containers": {"cna": {"title": "Rack: Rack::Static header_rules bypass via dot-segment normalization mismatch", "problemTypes": [{"descriptions": [{"cweId": "CWE-180", "lang": "en", "description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/rack/rack/security/advisories/GHSA-wvg4-6p58-3gh3", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/rack/rack/security/advisories/GHSA-wvg4-6p58-3gh3"}, {"name": "https://github.com/rack/rack/commit/18a07fe553afb4d8a678d6a948cd6ba1e11e28be", "tags": ["x_refsource_MISC"], "url": "https://github.com/rack/rack/commit/18a07fe553afb4d8a678d6a948cd6ba1e11e28be"}, {"name": "https://github.com/rack/rack/commit/9d7f19484ffd5ed5e032678c26ee6eff96d3a0a3", "tags": ["x_refsource_MISC"], "url": "https://github.com/rack/rack/commit/9d7f19484ffd5ed5e032678c26ee6eff96d3a0a3"}, {"name": "https://github.com/rack/rack/commit/e88097ccb88be44d06d47b42daffe04929516ee4", "tags": ["x_refsource_MISC"], "url": "https://github.com/rack/rack/commit/e88097ccb88be44d06d47b42daffe04929516ee4"}], "affected": [{"vendor": "rack", "product": "rack", "versions": [{"version": "< 2.2.25", "status": "affected"}, {"version": ">= 3.0, < 3.1.23", "status": "affected"}, {"version": ">= 3.2, < 3.2.8", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-09T22:00:40.811Z"}, "descriptions": [{"lang": "en", "value": "Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Static serves a path after Utils.clean_path_info normalization but evaluates header_rules against a path that is only URL-decoded. An unauthenticated attacker can request a known file through raw or percent-encoded dot segments and receive it without path-specific security headers such as Content-Disposition or Content-Security-Policy. Applications that do not use path-specific header_rules are not affected. This issue is fixed in versions 2.2.25, 3.1.23, and 3.2.8."}], "source": {"advisory": "GHSA-wvg4-6p58-3gh3", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "rack", "vendor": "rack", "versions": [{"status": "affected", "version": "< 2.2.25"}, {"status": "affected", "version": ">= 3.0, < 3.1.23"}, {"status": "affected", "version": ">= 3.2, < 3.2.8"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Static serves a path after Utils.clean_path_info normalization but evaluates header_rules against a path that is only URL-decoded. An unauthenticated attacker can request a known file through raw or percent-encoded dot segments and receive it without path-specific security headers such as Content-Disposition or Content-Security-Policy. Applications that do not use path-specific header_rules are not affected. This issue is fixed in versions 2.2.25, 3.1.23, and 3.2.8."}], "id": "CVE-2026-125110", "lastModified": "2026-11-12T19:18:09.510", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-09T22:18:42.287", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/rack/rack/commit/18a07fe553afb4d8a678d6a948cd6ba1e11e28be"}, {"source": "security-advisories@github.com", "url": "https://github.com/rack/rack/commit/9d7f19484ffd5ed5e032678c26ee6eff96d3a0a3"}, {"source": "security-advisories@github.com", "url": "https://github.com/rack/rack/commit/e88097ccb88be44d06d47b42daffe04929516ee4"}, {"source": "security-advisories@github.com", "url": "https://github.com/rack/rack/security/advisories/GHSA-wvg4-6p58-3gh3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-180"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "rack: rack: Security header bypass via unnormalized dot segments in request paths", "id": "2570166", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2570166"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-41", "details": ["A flaw was found in Rack. An unauthenticated remote attacker can bypass path-specific security headers by requesting files using paths containing raw or percent-encoded dot segments. This issue occurs because the static file serving component normalizes paths when locating files but evaluates header rules against unnormalized paths. Consequently, protected files can be delivered to clients without configured protections, such as Content-Security-Policy (CSP) or Content-Disposition headers."], "mitigation": {"lang": "en:us", "value": "Configure an edge reverse proxy (such as Apache HTTP Server or Nginx) in front of the Rack service to normalize URI paths and reject incoming requests containing raw or percent-encoded dot segments (`..` or `%2e%2e`). Alternatively, define required security headers, such as Content-Security-Policy or Content-Disposition, directly within the reverse proxy configuration so they apply consistently regardless of application-level path routing.\nCaveat: Blocking dot segments at the proxy layer may impact web applications that legitimately handle path traversal sequences in query strings. Reloading or restarting web server services to apply proxy configuration changes will temporarily interrupt active connections."}, "name": "CVE-2026-125110", "package_state": [{"cpe": "cpe:/a:redhat:3scale:2.13", "fix_state": "Fix deferred", "package_name": "3scale-amp2/backend-rhel8", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:3scale:2.13", "fix_state": "Out of support scope", "package_name": "3scale-amp2/system-rhel8", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:3scale:2.13", "fix_state": "Fix deferred", "package_name": "3scale-amp2/system-rhel9", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:3scale:2.13", "fix_state": "Fix deferred", "package_name": "3scale-amp2/zync-rhel9", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:rhel_els:7", "fix_state": "Fix deferred", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-cinder-backup", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-cinder-volume", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-haproxy", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-manila-share", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-mariadb", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-ovn-northd", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-rabbitmq", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "rhosp13/openstack-redis", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-cinder-backup", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-cinder-volume", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-haproxy", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-manila-share", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-mariadb", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-ovn-northd", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-rabbitmq", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Out of support scope", "package_name": "rhosp-rhel8/openstack-redis", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-cinder-backup", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-cinder-volume", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-haproxy", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-manila-share", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-mariadb", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-ovn-northd", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-rabbitmq", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Out of support scope", "package_name": "rhosp-rhel9/openstack-redis", "product_name": "Red Hat OpenStack Platform 17.1"}], "public_date": "2026-11-09T22:00:40Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-125110\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-125110\nhttps://github.com/rack/rack/commit/18a07fe553afb4d8a678d6a948cd6ba1e11e28be\nhttps://github.com/rack/rack/commit/9d7f19484ffd5ed5e032678c26ee6eff96d3a0a3\nhttps://github.com/rack/rack/commit/e88097ccb88be44d06d47b42daffe04929516ee4\nhttps://github.com/rack/rack/security/advisories/GHSA-wvg4-6p58-3gh3"], "statement": "This vulnerability is rated as Moderate severity because, although exploitable remotely without authentication, it does not allow arbitrary file retrieval or server compromise, but only bypasses path-specific HTTP response headers on already accessible static files. In standard Red Hat deployments, Rack applications are only affected if they specifically rely on Rack::Static header rules to apply security policies such as restrictive Content-Security-Policy or Content-Disposition headers. Deployments that do not configure location-dependent header directives or that manage security headers at an edge proxy are not impacted.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.2.25)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0,3.1.23)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.2,3.2.8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "rack", "source": "cna", "vendor": "rack"}, "product": "rack", "vendor": "rack"}], "created": "2026-11-10T00:00:11.049830+00:00", "updated": "2026-11-10T00:00:14.282754+00:00", "vendors": ["rack", "rack$PRODUCT$rack"]}