{"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": "2026-11-09T22:18:42.287", "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": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-180"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"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"]}