{"id":"CVE-2026-114732","title":"Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper authentication vulnerability in multi-host installations","summary":"Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper authentication vulnerability in multi-host installations. When a user logs in with an alias address, rcube_user::query() matched the address against identi…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-288"],"vendor":"Roundcube","product":"Webmail","affected":["Webmail >= 1.6.0 < 1.6.20","Webmail >= 1.7.0 < 1.7.5"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T02:16:51.833Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114732","references":[{"url":"https://bugs.debian.org/1151279"},{"url":"https://github.com/roundcube/roundcubemail/commit/453c413d6851cf603bebdb15e58381f5ef9b8094"},{"url":"https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"},{"url":"https://github.com/roundcube/roundcubemail/commit/cb235cbfef88cbf78236dc67d3b667bf3dc61ddd"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T03:25:15.661Z","slug":"CVE-2026-114732","body":"## Overview\n\nRoundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper authentication vulnerability in multi-host installations. When a user logs in with an alias address, rcube_user::query() matched the address against identity records without qualifying the lookup by IMAP host, so a login could be resolved to a user account belonging to a different IMAP host. Upstream fixed this in the commit “Fix bug where an alias login wasn’t qualified by IMAP host”.\n\n## Affected\n\n- `Webmail >= 1.6.0 < 1.6.20`\n- `Webmail >= 1.7.0 < 1.7.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":37.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}