{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-5266","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2025-05-27T12:29:24.726Z","datePublished":"2025-05-27T12:29:25.084Z","dateUpdated":"2026-04-13T14:29:08.538Z"},"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"128.11","lessThanOrEqual":"128.*","versionType":"rpm"},{"status":"unaffected","version":"139","lessThanOrEqual":"*","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"128.11","lessThanOrEqual":"128.*","versionType":"rpm"},{"status":"unaffected","version":"139","lessThanOrEqual":"*","versionType":"rpm"}]}],"descriptions":[{"lang":"en","value":"Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.","supportingMedia":[{"type":"text/html","base64":false,"value":"Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11."}]}],"title":"Script element events leaked cross-origin resource status","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1965628"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-42/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-44/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-45/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-46/"}],"credits":[{"lang":"en","value":"Jakub Szymsza"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2026-04-13T14:29:08.538Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-200","lang":"en","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-09-23T14:44:04.447377Z","id":"CVE-2025-5266","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-09-23T14:44:14.612Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00043.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T20:06:04.324Z"}}]}}