CVE-2026-114732 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.
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-114732?
CVE-2026-114732 is a medium-severity vulnerability in Roundcube Webmail, published on 22 Oct 2026.
Official description
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 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”.
Weakness: CWE-288
Which versions are affected by CVE-2026-114732?
How do I fix CVE-2026-114732?
Upgrade to a fixed version.
Is CVE-2026-114732 being exploited?
There is no known exploitation of CVE-2026-114732 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-114732, GHSA-qc6m-xxcv-cwh2, UBUNTU-CVE-2026-114732.