{"id":"CVE-2026-106016","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-106016","generatedAt":"2026-10-23T21:17:43.344Z","title":"Mitigation bypass in the File Handling component.","description":"Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 157.0.1 and Thunderbird 158.","published":"2026-10-06T13:16:47.000Z","lastModified":"2026-10-13T19:18:02.000Z","status":"Modified","sourceIdentifier":"security@mozilla.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-693"],"affected":["mozilla/firefox"],"epss":{"score":0.00323,"percentile":0.24056,"date":"2026-10-22","history":[{"date":"2026-10-07","score":0.00144,"percentile":0.03171}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-08T00:45:11.000Z","detail":{"from":null,"score":"9.8","severity":"CRITICAL","fromSeverity":null},"summary":"Now scored CVSS 9.8 CRITICAL."},{"kind":"new","label":"New CVE","at":"2026-10-06T13:16:47.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-06T13:16:47.290Z"},"summary":"New CVE, critical severity (CVSS 9.8)."}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2067465","tags":["Permissions Required"],"source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-104/","tags":["Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","source":"security@mozilla.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106016","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."}