{"id":"CVE-2026-74949","revision":"35472fb911714b6d8fd09534a9f609d8","records":[{"revision":"35472fb911714b6d8fd09534a9f609d8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74949","aliases":[],"title":"Privilege escalation due to use-after-free in the Graphics: Canvas2D component","description":"Privilege escalation due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.","state":0,"publishedAt":"2026-08-18T12:23:30.578+00:00","modifiedAt":"2026-09-01T21:25:04.789+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\": \"140.14\",\n                            \"lessThanOrEqual\": \"140.*\",\n                            \"versionType\": \"rpm\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"153.1\",\n                            \"lessThanOrEqual\": \"153.*\",\n                            \"versionType\": \"rpm\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"154\",\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\": \"140.14\",\n                            \"lessThanOrEqual\": \"140.*\",\n                            \"versionType\": \"rpm\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"153.1\",\n                            \"lessThanOrEqual\": \"153.*\",\n                            \"versionType\": \"rpm\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"154\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2060245","https://www.mozilla.org/security/advisories/mfsa2026-74/","https://www.mozilla.org/security/advisories/mfsa2026-76/","https://www.mozilla.org/security/advisories/mfsa2026-77/","https://www.mozilla.org/security/advisories/mfsa2026-78/","https://www.mozilla.org/security/advisories/mfsa2026-79/","https://www.mozilla.org/security/advisories/mfsa2026-80/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74949","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74949","identifiers":["CVE-2026-74949"]},"retained":false,"historicalAffected":[]}],"coverage":[]}