{"id":"CVE-2026-106016","published":"2026-10-06T13:16:47Z","modified":"2026-10-13T19:18:01Z","title":"Mitigation bypass in the File Handling component","vendor":"Mozilla","product":"Firefox","tier":"core","eol":null,"description":{"text":"Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 157.0.1 and Thunderbird 158.","provenance":"source","from":"NVD"},"summary":{"text":"A mitigation bypass in the File Handling component of Mozilla Firefox defeats a protection mechanism that the browser uses to guard file handling. An attacker with network access can exploit it without authentication or user interaction, to compromise confidentiality, integrity and availability.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:24:58Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.00319,"percentile":0.24783,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":9,"pulses":[{"name":"Known_Cve | Oct 15, 2026 | Part 1/3","url":"https://otx.alienvault.com/pulse/6acf98726e4260f2f2ba3d49","created":"2026-10-14"},{"name":"Known_Cve | Oct 14, 2026 | Part 1/3","url":"https://otx.alienvault.com/pulse/6ace466c18a71dd7afa3f788","created":"2026-10-13"},{"name":"Known_Cve | Oct 13, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6accf723f346ce4b8a50d55a","created":"2026-10-12"},{"name":"Known_Cve | Oct 12, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6acba8a68a86c4d9508005a7","created":"2026-10-11"},{"name":"Known_Cve | Oct 11, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6aca554665c47eb24716f8f2","created":"2026-10-10"},{"name":"Known_Cve | Oct 10, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6ac903591ff588ac9423f235","created":"2026-10-09"},{"name":"Known_Cve | Oct 9, 2026 | Part 2/2","url":"https://otx.alienvault.com/pulse/6ac7b1a3f215e7af4290dc2e","created":"2026-10-08"},{"name":"Known_Cve | Oct 8, 2026 | Part 2/2","url":"https://otx.alienvault.com/pulse/6ac65e5b607642608f852c9a","created":"2026-10-07"},{"name":"Known_Cve | Oct 7, 2026 | Part 2/2","url":"https://otx.alienvault.com/pulse/6ac50f851d74c73e484f44c6","created":"2026-10-06"}],"provenance":"machine"},"cwes":[{"id":"CWE-693","name":"Protection Mechanism Failure"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2067465","tags":["Permissions Required"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-104/","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-93377","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93377","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-10-06","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106016","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":14.1,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":4.96,"detail":"percentile 0.2478"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":2.27,"detail":"9 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}