{"api_version":"1","generated_at":"2026-10-14T20:22:02+00:00","cve":"CVE-2026-109766","urls":{"html":"https://cve.report/CVE-2026-109766","api":"https://cve.report/api/cve/CVE-2026-109766.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-109766","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-109766"},"summary":{"title":"Mitigation bypass in the Enterprise Policies component","description":"Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.","state":"PUBLISHED","assigner":"mozilla","published_at":"2026-10-13 13:17:27","updated_at":"2026-10-13 19:18:40"},"problem_types":[],"metrics":[],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2026-110/","name":"https://www.mozilla.org/security/advisories/mfsa2026-110/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2074406","name":"https://bugzilla.mozilla.org/show_bug.cgi?id=2074406","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","name":"https://www.mozilla.org/security/advisories/mfsa2026-106/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","name":"https://www.mozilla.org/security/advisories/mfsa2026-109/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","name":"https://www.mozilla.org/security/advisories/mfsa2026-108/","refsource":"security@mozilla.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109766","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109766","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Mozilla","product":"Firefox","version":"unaffected 153.5 153.* rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Firefox","version":"unaffected 158 * rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Thunderbird","version":"unaffected 153.5 153.* rpm","platforms":[]},{"source":"CNA","vendor":"Mozilla","product":"Thunderbird","version":"unaffected 158 * rpm","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Souma Ohsawa","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThanOrEqual":"153.*","status":"unaffected","version":"153.5","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"158","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThanOrEqual":"153.*","status":"unaffected","version":"153.5","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"158","versionType":"rpm"}]}],"credits":[{"lang":"en","value":"Souma Ohsawa"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5."}],"value":"Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5."}],"providerMetadata":{"dateUpdated":"2026-10-13T18:17:21.995Z","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla"},"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2074406"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-110/"}],"title":"Mitigation bypass in the Enterprise Policies component"}},"cveMetadata":{"assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","assignerShortName":"mozilla","cveId":"CVE-2026-109766","datePublished":"2026-10-13T12:29:32.635Z","dateReserved":"2026-10-13T00:48:40.759Z","dateUpdated":"2026-10-13T18:17:21.995Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-13 13:17:27","lastModifiedDate":"2026-10-13 19:18:40","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"109766","Ordinal":"1","Title":"Mitigation bypass in the Enterprise Policies component","CVE":"CVE-2026-109766","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"109766","Ordinal":"1","NoteData":"Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.","Type":"Description","Title":"Mitigation bypass in the Enterprise Policies component"}]}}}