{"id":"CVE-2026-109767","title":"Information disclosure in the Networking component","summary":"Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","cwe":["CWE-200"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T19:18:40.903","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109767","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2074963","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-110/","label":"security@mozilla.org"}],"tags":["nvd"],"ingestedAt":"2026-10-13T13:27:04.013Z","slug":"CVE-2026-109767","body":"## Overview\n\nInformation disclosure in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219777,"id":"CVE-2026-109767","ts":1791905698148,"field":"cvss","old":null,"new":"4.3"},{"seq":219776,"id":"CVE-2026-109767","ts":1791905698148,"field":"severity","old":"none","new":"medium"}]}