{"id":"CVE-2025-10859","state":"PUBLISHED","title":"Data stored in cookies for non-HTML content while browsing Incognito could be viewed after closing private tabs","description":"Cookie storage for non-HTML temporary documents was being shared incorrectly with normal browsing content, allowing information from private tabs to escape Incognito mode even after the user closed all tabs. This vulnerability was fixed in Firefox for iOS 143.1.","publishedAt":"2025-09-30T12:49:07.059Z","updatedAt":"2026-04-13T14:31:38.944Z","severity":{"score":4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox for iOS"],"affected":[{"vendor":"Mozilla","product":"Firefox for iOS","versions":[{"version":"143.1","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1684624","https://www.mozilla.org/security/advisories/mfsa2025-79/"],"weaknesses":["CWE-359"],"ingestedAt":"2026-10-29T20:08:20.985Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/10xxx/CVE-2025-10859.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-10859","state":"PUBLISHED","datePublished":"2025-09-30T12:49:07.059Z","dateUpdated":"2026-04-13T14:31:38.944Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2025-09-22T18:14:38.909Z"},"containers":{"cna":{"title":"Data stored in cookies for non-HTML content while browsing Incognito could be viewed after closing private tabs","descriptions":[{"lang":"en","value":"Cookie storage for non-HTML temporary documents was being shared incorrectly with normal browsing content, allowing information from private tabs to escape Incognito mode even after the user closed all tabs. This vulnerability was fixed in Firefox for iOS 143.1."}],"affected":[{"vendor":"Mozilla","product":"Firefox for iOS","versions":[{"version":"143.1","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1684624"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-79/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-04-13T14:31:38.944Z"},"credits":[{"lang":"en","value":"Muneaki Nishimura"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-09-30T13:38:47.283789Z","id":"CVE-2025-10859","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-359","type":"CWE","lang":"en","description":"CWE-359 Exposure of Private Personal Information to an Unauthorized Actor"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-30T13:38:50.570Z"}}]}}}