{"id":"CVE-2026-74982","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74982","summary":"Denial-of-service in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.","details":"Denial-of-service in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.","published":"2026-08-18T13:17:37.253","modified":"2026-08-20T18:16:50.110","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2051788"},{"type":"WEB","url":"https://www.mozilla.org/security/advisories/mfsa2026-74/"},{"type":"WEB","url":"https://www.mozilla.org/security/advisories/mfsa2026-77/"},{"type":"WEB","url":"https://www.mozilla.org/security/advisories/mfsa2026-78/"},{"type":"WEB","url":"https://www.mozilla.org/security/advisories/mfsa2026-80/"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-20T18:16:50.110"}}