{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8950","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2026-05-19T12:29:41.562Z","datePublished":"2026-05-19T12:29:42.239Z","dateUpdated":"2026-05-19T17:10:48.079Z"},"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"140.11","lessThanOrEqual":"140.*","versionType":"rpm"},{"status":"unaffected","version":"151","lessThanOrEqual":"*","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"140.11","lessThanOrEqual":"140.*","versionType":"rpm"},{"status":"unaffected","version":"151","lessThanOrEqual":"*","versionType":"rpm"}]}],"descriptions":[{"lang":"en","value":"Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.","supportingMedia":[{"type":"text/html","base64":false,"value":"Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11."}]}],"title":"Same-origin policy bypass in the Networking: HTTP component","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1965430"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-46/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-48/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-50/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-51/"}],"credits":[{"lang":"en","value":"Jakub Szymsza"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2026-05-19T17:10:48.079Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-346","lang":"en","description":"CWE-346 Origin Validation Error"}]}],"metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":9.3,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-19T15:47:45.885624Z","id":"CVE-2026-8950","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":"2026-05-19T15:49:32.341Z"}}]}}