{"id":"CVE-2026-92074","state":"PUBLISHED","title":"Mitigation bypass in the Popup Blocker component","description":"Mitigation bypass in the Popup Blocker component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.","publishedAt":"2026-09-15T12:34:36.123Z","updatedAt":"2026-09-22T16:08:36.861Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox","Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"153.3","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"156","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"153.3","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"156","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2063539","https://www.mozilla.org/security/advisories/mfsa2026-90/","https://www.mozilla.org/security/advisories/mfsa2026-93/","https://www.mozilla.org/security/advisories/mfsa2026-94/","https://www.mozilla.org/security/advisories/mfsa2026-96/"],"weaknesses":["CWE-693"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92074.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92074","state":"PUBLISHED","datePublished":"2026-09-15T12:34:36.123Z","dateUpdated":"2026-09-22T16:08:36.861Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2026-09-15T12:34:35.643Z"},"containers":{"cna":{"title":"Mitigation bypass in the Popup Blocker component","descriptions":[{"lang":"en","value":"Mitigation bypass in the Popup Blocker component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"153.3","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"156","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"153.3","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"156","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2063539"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-96/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-09-16T14:24:45.058Z"},"credits":[{"lang":"en","value":"Finn Westendorf"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":8.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T15:54:20.778712Z","id":"CVE-2026-92074","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-693","type":"CWE","lang":"en","description":"CWE-693 Protection Mechanism Failure"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-22T16:08:36.861Z"}}]}}}