{"affected":[{"product":"Firefox","source":"CNA: mozilla","vendor":"Mozilla","versions":[{"lessThanOrEqual":"115.*","status":"unaffected","version":"115.44","versionType":"rpm"},{"lessThanOrEqual":"153.*","status":"unaffected","version":"153.6","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"159","versionType":"rpm"}]},{"product":"Thunderbird","source":"CNA: mozilla","vendor":"Mozilla","versions":[{"lessThanOrEqual":"153.*","status":"unaffected","version":"153.6","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"159","versionType":"rpm"}]}],"cveId":"CVE-2026-117946","cwes":["CWE-119"],"description":"Incorrect boundary conditions in the JavaScript Engine component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.","epss":{"date":"2026-11-05","percentile":0.08351,"score":0.00187},"exploits":[],"kev":null,"metrics":[{"score":9.8,"severity":"critical","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793888516721,"publishedAt":1793109935349,"references":[{"source":"CNA: mozilla","tags":[],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2082092"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-118/"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-119/"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-120/"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-121/"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-122/"}],"remediation":[],"revision":"847720afe5aba21e284d85766deaa7f7936e30ef72a2b79f68e6ac3562fb4f9d","sources":[{"modifiedAt":1793888516721,"name":"CNA: mozilla","retrievedAt":1793891444129,"url":"https://www.cve.org/CVERecord?id=CVE-2026-117946"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793891452398,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-117946"}],"ssvc":{"assessedAt":1793888434696,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Incorrect boundary conditions in the JavaScript Engine component","updatedAt":1793891452398}