CVE-2026-114732CWE-288

CVE-2026-114732

Medium · published October 22, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
28.4
In the wild
Unconfirmed
What it is

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”.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00358 · 28.4th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2026-10-22T07:16Z
References (6)
https://bugs.debian.org/1151279 · [email protected]https://github.com/roundcube/roundcubemail/commit/453c413d6851cf603bebdb15e58381f5ef9b8094 · [email protected]https://github.com/roundcube/roundcubemail/commit/cb235cbfef88cbf78236dc67d3b667bf3dc61ddd · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 · [email protected]https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 · [email protected]
EPSS history
Timeline
  • 23 OCT 03:55Z
    EPSS moved — → 0%
    epss
  • 22 OCT 02:16Z
    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
    cvelistv5
  • 22 OCT 02:16Z
    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
    cvelistv5