{"id":"CVE-2025-8037","state":"PUBLISHED","title":"Nameless cookies shadow secure cookies","description":"Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the `Secure` attribute. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.","publishedAt":"2025-07-22T20:49:25.621Z","updatedAt":"2026-07-29T14:55:07.468Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox","Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"140.1","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"141","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.1","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"141","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1964767","https://www.mozilla.org/security/advisories/mfsa2025-56/","https://www.mozilla.org/security/advisories/mfsa2025-59/","https://www.mozilla.org/security/advisories/mfsa2025-61/","https://www.mozilla.org/security/advisories/mfsa2025-63/"],"weaknesses":["CWE-614"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/8xxx/CVE-2025-8037.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-8037","state":"PUBLISHED","datePublished":"2025-07-22T20:49:25.621Z","dateUpdated":"2026-07-29T14:55:07.468Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2025-07-22T10:14:04.585Z"},"containers":{"cna":{"title":"Nameless cookies shadow secure cookies","descriptions":[{"lang":"en","value":"Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the `Secure` attribute. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"140.1","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"141","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.1","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"141","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1964767"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-56/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-59/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-61/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-63/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-04-13T14:26:53.773Z"},"credits":[{"lang":"en","value":"Uku Sõrmus"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-07-23T14:22:54.948290Z","id":"CVE-2025-8037","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-614","type":"CWE","lang":"en","description":"CWE-614 Sensitive Cookie in HTTPS Session Without 'Secure' Attribute"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-29T14:55:07.468Z"}}]}}}