{"id":"CVE-2026-113866","published":"2026-10-20T20:17:19.397","lastModified":"2026-10-22T17:36:46.950","description":"When setting up an account, Thunderbird's Exchange AutoDiscover lookup also queried the domain's AutoDiscover service over plain HTTP. Due to a bug, that unencrypted request included the credentials the user had entered, allowing a network attacker to obtain the user's password. This vulnerability was fixed in Thunderbird 158.0.1 and Thunderbird 153.5.1.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwes":["CWE-523"],"vendors":[],"products":[],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2080121","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-114/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-115/","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}