{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2021-4140","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","assignerShortName":"mozilla","dateUpdated":"2025-04-16T15:55:20.960Z","dateReserved":"2021-12-20T00:00:00.000Z","datePublished":"2022-12-22T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2022-12-22T00:00:00.000Z"},"descriptions":[{"lang":"en","value":"It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5."}],"affected":[{"vendor":"Mozilla","product":"Firefox ESR","versions":[{"version":"unspecified","lessThan":"91.5","status":"affected","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","lessThan":"96","status":"affected","versionType":"custom"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"unspecified","lessThan":"91.5","status":"affected","versionType":"custom"}]}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2022-01/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-02/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-03/"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1746720"}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"Iframe sandbox bypass with XSLT"}]}]},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T17:16:04.229Z"},"title":"CVE Program Container","references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2022-01/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-02/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2022-03/","tags":["x_transferred"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1746720","tags":["x_transferred"]}]},{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-91","lang":"en","description":"CWE-91 XML Injection (aka Blind XPath Injection)"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-16T15:55:14.536299Z","id":"CVE-2021-4140","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-04-16T15:55:20.960Z"}}]}}