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 identity records without qua…
6.8Mittel
CVE-2026-126813Roundcube Webmail before 1.6.21 and 1.7.6 IMAP Command Injection via _uid
Beschreibung
Roundcube Webmail before 1.6.21 and 1.7.x before 1.7.6 contains an IMAP command injection vulnerability that allows attackers to inject commands via CRLF in the _uid parameter when messages_cache is enabled. Attackers can lure logged-in victims into opening crafted GET links to mail/show or mail/get, executing IMAP commands that delete messages, change flags, or grant mailbox access via SETACL.
Schwachstellentyp (CWE):
CWE-93
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
Referenzen und Patches
- https://github.com/roundcube/roundcubemail/commit/4cb1cf106b9ca5d465ed4924f2fab5d5108edfeb patch
- https://github.com/roundcube/roundcubemail/commit/d1dda13597ceed9df49d434a8d88b758bcf6ef5c patch
- https://github.com/roundcube/roundcubemail/commit/2ea63692178cab5cea486c7c630901b7f6852c80 patch
- https://github.com/roundcube/roundcubemail/blob/1.7.5/program/lib/Roundcube/rcube_imap_generic.php#L2892 technical-description
- https://roundcube.net/news/2026/11/09/security-updates-1.6.21-and-1.7.6 vendor-advisory
- Webmail 1.6.21 Release Notes release-notes
- Webmail 1.7.6 Release Notes release-notes
- VulnCheck Advisory: Roundcube Webmail before 1.6.21 and 1.7.6 IMAP Command Injection via _uid third-party-advisory