{"id":"CVE-2026-74944","published":"2026-08-18T12:23:29Z","modified":"2026-08-21T20:15:24Z","title":"Use-after-free in the DOM: Core & HTML component","vendor":"Mozilla","product":"Firefox","tier":"tail","description":{"text":"Use-after-free in the DOM: Core & HTML 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.","provenance":"source","from":"CVE.org"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"CISA ADP Vulnrichment"},"epss":{"score":0.00592,"percentile":0.48144,"provenance":"source"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2057778","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-74/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-76/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-77/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-78/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-79/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-80/","tags":[]}],"priority":{"score":16.5,"factors":[{"name":"EPSS percentile","points":9.63},{"name":"CVSS severity","points":6.86}]},"vendorSlug":"mozilla","euvd":{"id":"EUVD-2026-60751","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-mozilla-firefox-cwe-416"}}