{"id":"CVE-2023-4583","state":"PUBLISHED","title":"Browsing Context potentially not cleared when closing Private Window","description":"When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.","publishedAt":"2023-09-11T08:02:01.933Z","updatedAt":"2025-12-18T15:23:17.682Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox","Mozilla Firefox ESR","Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"117","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox ESR","versions":[{"version":"unspecified","status":"affected","lessThan":"115.2","versionType":"custom"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"unspecified","status":"affected","lessThan":"115.2","versionType":"custom"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1842030","https://www.mozilla.org/security/advisories/mfsa2023-34/","https://www.mozilla.org/security/advisories/mfsa2023-36/","https://www.mozilla.org/security/advisories/mfsa2023-38/"],"weaknesses":["CWE-754"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/4xxx/CVE-2023-4583.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-4583","state":"PUBLISHED","datePublished":"2023-09-11T08:02:01.933Z","dateUpdated":"2025-12-18T15:23:17.682Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2023-08-29T03:37:00.389Z"},"containers":{"cna":{"title":"Browsing Context potentially not cleared when closing Private Window","descriptions":[{"lang":"en","value":"When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"117","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox ESR","versions":[{"version":"unspecified","status":"affected","lessThan":"115.2","versionType":"custom"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"unspecified","status":"affected","lessThan":"115.2","versionType":"custom"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1842030"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-34/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-36/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-38/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2025-12-18T15:23:17.682Z"},"credits":[{"lang":"en","value":"Thejaka Maldeniya"}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1842030","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-34/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-36/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-38/","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T07:31:06.553Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-09-19T19:09:13.239970Z","id":"CVE-2023-4583","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","type":"CWE","lang":"en","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-19T19:57:57.681Z"}}]}}}