{"id":"CVE-2026-118021","aliases":[],"title":"Sandbox escape due to use-after-free in the XPCOM component","description":"Sandbox escape due to use-after-free in the XPCOM component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.","severity":"unknown","score":null,"published":"2026-10-27T14:06:04.037Z","modified":"2026-10-27T18:18:11.169Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2076695","https://www.mozilla.org/security/advisories/mfsa2026-118/","https://www.mozilla.org/security/advisories/mfsa2026-121/"],"sources":[{"name":"CVE","id":"CVE-2026-118021","modified":"2026-10-27T18:18:11.169Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-118021"}],"assessments":[]}