{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-117939","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2026-10-27T14:05:32.632Z","datePublished":"2026-10-27T14:05:32.807Z","dateUpdated":"2026-10-27T18:29:21.063Z"},"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"115.44","lessThanOrEqual":"115.*","versionType":"rpm"},{"status":"unaffected","version":"153.6","lessThanOrEqual":"153.*","versionType":"rpm"},{"status":"unaffected","version":"159","lessThanOrEqual":"*","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"153.6","lessThanOrEqual":"153.*","versionType":"rpm"},{"status":"unaffected","version":"159","lessThanOrEqual":"*","versionType":"rpm"}]}],"descriptions":[{"lang":"en","value":"Use-after-free in the XML component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.","supportingMedia":[{"type":"text/html","base64":false,"value":"Use-after-free in the XML component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6."}]}],"title":"Use-after-free in the XML component","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2082030"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-118/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-119/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-120/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-121/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-122/"}],"credits":[{"lang":"en","value":"OpenAI Codex Security (kylebot)"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2026-10-27T18:29:21.063Z"}}}}