{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-126076", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-10T17:07:43.285Z", "datePublished": "2026-11-10T20:57:07.582Z", "dateUpdated": "2026-11-10T20:57:07.582Z"}, "containers": {"cna": {"title": "Action Pack: Possible restoration of destroyed sessions in Action Dispatch CacheStore", "problemTypes": [{"descriptions": [{"cweId": "CWE-613", "lang": "en", "description": "CWE-613: Insufficient Session Expiration", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/rails/rails/security/advisories/GHSA-2586-8ghr-69fj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/rails/rails/security/advisories/GHSA-2586-8ghr-69fj"}, {"name": "https://github.com/rails/rails/commit/5bb5ec66ed8faaf590ffe1222d7a5eb6e9d050f5", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/5bb5ec66ed8faaf590ffe1222d7a5eb6e9d050f5"}, {"name": "https://github.com/rails/rails/commit/d479192cf88a8b30a335a8bc25188a2d8e0f8d9f", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/d479192cf88a8b30a335a8bc25188a2d8e0f8d9f"}, {"name": "https://github.com/rails/rails/releases/tag/v8.0.5.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/releases/tag/v8.0.5.2"}, {"name": "https://github.com/rails/rails/releases/tag/v8.1.4.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/releases/tag/v8.1.4.1"}], "affected": [{"vendor": "rails", "product": "rails", "versions": [{"version": ">= 8.1, < 8.1.4.1", "status": "affected"}, {"version": "< 8.0.5.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-10T20:57:07.582Z"}, "descriptions": [{"lang": "en", "value": "Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, ActionDispatch::Session::CacheStore writes a session back to the cache at the end of each request that loaded it, without checking that the session's cache entry still exists. When a concurrent request destroys the session, through reset_session on logout or by deleting its cache entry on the server, a request that loaded the session earlier and finishes later restores it under its original session ID. Logout and server-side revocation could therefore fail to end a session, and an attacker who holds a stolen session cookie could keep that session valid across the victim's logout. Applications that use config.session_store :cache_store are affected, with any cache backend. ActionDispatch::Session::CookieStore is not affected, nor is ActionDispatch::Session::MemCacheStore with Dalli 4.0.0 or later, whose session store does not write back a session that was deleted. This issue is fixed in versions 8.1.4.1 and 8.0.5.2."}], "source": {"advisory": "GHSA-2586-8ghr-69fj", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "rails", "vendor": "rails", "versions": [{"status": "affected", "version": ">= 8.1, < 8.1.4.1"}, {"status": "affected", "version": "< 8.0.5.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, ActionDispatch::Session::CacheStore writes a session back to the cache at the end of each request that loaded it, without checking that the session's cache entry still exists. When a concurrent request destroys the session, through reset_session on logout or by deleting its cache entry on the server, a request that loaded the session earlier and finishes later restores it under its original session ID. Logout and server-side revocation could therefore fail to end a session, and an attacker who holds a stolen session cookie could keep that session valid across the victim's logout. Applications that use config.session_store :cache_store are affected, with any cache backend. ActionDispatch::Session::CookieStore is not affected, nor is ActionDispatch::Session::MemCacheStore with Dalli 4.0.0 or later, whose session store does not write back a session that was deleted. This issue is fixed in versions 8.1.4.1 and 8.0.5.2."}], "id": "CVE-2026-126076", "lastModified": "2026-11-10T21:19:26.040", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-10T21:19:26.040", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/commit/5bb5ec66ed8faaf590ffe1222d7a5eb6e9d050f5"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/commit/d479192cf88a8b30a335a8bc25188a2d8e0f8d9f"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/releases/tag/v8.0.5.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/releases/tag/v8.1.4.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/security/advisories/GHSA-2586-8ghr-69fj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-613"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}