{"id":"CVE-2026-118021","revision":"ed69a0040d024bc08c1f26c953394b84","records":[{"revision":"ed69a0040d024bc08c1f26c953394b84","observedAt":"2026-10-27T19:45:55.783+00:00","statement":{"source":"cve-program","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.","state":0,"publishedAt":"2026-10-27T14:06:04.037+00:00","modifiedAt":"2026-10-27T18:18:11.169+00:00","affected":[{"ecosystem":"Vendor product","name":"Firefox","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Firefox\",\n                    \"vendor\": \"Mozilla\",\n                    \"versions\": [\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"159\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Thunderbird","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Thunderbird\",\n                    \"vendor\": \"Mozilla\",\n                    \"versions\": [\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"159\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ]\n                }"}],"metrics":[],"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/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118021","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-118021","identifiers":["CVE-2026-118021"]},"retained":false,"historicalAffected":[]}],"coverage":[]}