{"id":"EM-20261110-RV6C","url":"https://cyber.eventmonitor.net/incident/EM-20261110-RV6C/action-pack-vulnerability-cve-2026-126076/","type":"cve","title":"Action Pack Vulnerability (CVE-2026-126076)","subtitle":"CVE-2026-126076","subject":"CVE-2026-126076","status":"Developing","severity":"medium","affected":[],"headline":null,"born":"2026-11-10T21:19:09.000Z","firstSignal":"2026-11-10T20:57:07.000Z","lastSignal":"2026-11-10T21:19:09.000Z","updated":"2026-11-11T12:38:43.721Z","revision":1,"life":[{"status":"Born","at":"2026-11-10T21:19:09.000Z","why":"second independent source: C26 GitHub Advisory Database"},{"status":"Developing","at":"2026-11-10T21:19:09.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-10T20:57:07.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-10T21:19:09.000Z","what":"Born: second source, C26 GitHub Advisory Database. Page EM-20261110-RV6C created."}],"stages":[{"name":"Disclosed","at":"2026-11-10T21:19:26.040Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-10T21:19:26.040Z","detail":"CVSS 4.2"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-10T20:57:07.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-10T20:57:07.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-126076 (moderate)","text":"actionpack: actionpack: Session retention across logout via race condition in CacheStore","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-126076.json"},{"at":"2026-11-10T21:19:09.000Z","source":"C26","sourceName":"GitHub Advisory Database","role":"Database","severity":2,"title":"GHSA-2586-8ghr-69fj / CVE-2026-126076: Action Pack: Possible restoration of destroyed sessions in Action Dispatch CacheStore","text":"rubygems:actionpack, rubygems:actionpack","url":"https://github.com/advisories/GHSA-2586-8ghr-69fj"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-10T21:19:26.040","score":4.2,"severity":"MEDIUM","desc":"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…","product":"","seen":1794353084878},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}