{"id":"CVE-2026-109763","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-109763","generatedAt":"2026-10-28T02:24:45.293Z","title":"Mitigation bypass in the File Handling component.","description":"Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.","published":"2026-10-13T13:17:27.000Z","lastModified":"2026-10-13T19:18:40.000Z","status":"Deferred","sourceIdentifier":"security@mozilla.org","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00166,"percentile":0.05851,"date":"2026-10-26","history":[{"date":"2026-10-14","score":0.00166,"percentile":0.05515}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-13T13:17:27.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-13T13:17:27.150Z"},"summary":"New CVE, not yet scored."}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2072501","source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-110/","source":"security@mozilla.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-109763","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}