{"affected":[{"product":"Firefox","source":"CNA: mozilla","vendor":"Mozilla","versions":[{"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-2026-117947","cwes":["CWE-416"],"description":"Use-after-free in the XML component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.","epss":{"date":"2026-11-05","percentile":0.07784,"score":0.00181},"exploits":[],"kev":null,"metrics":[{"score":6.3,"severity":"medium","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","version":"3.1"}],"modifiedAt":1793888431835,"publishedAt":1793109935706,"references":[{"source":"CNA: mozilla","tags":[],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2082100"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-118/"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-120/"},{"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":"d50e50c4aacfb87da227e816260a7a31ed0c071da82df83310a23a97733a01de","sources":[{"modifiedAt":1793888431835,"name":"CNA: mozilla","retrievedAt":1793891445294,"url":"https://www.cve.org/CVERecord?id=CVE-2026-117947"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793891452268,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-117947"}],"ssvc":{"assessedAt":1793888415439,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Use-after-free in the XML component","updatedAt":1793891452268}