CVE
CVE-2026-24031
dovecot: Dovecot: Authentication bypass and user enumeration due to cleared auth_username_chars configuration (important)
DOCUMENTATION: A flaw was found in Dovecot. When the authusernamechars configuration is cleared by an administrator, it creates an authentication bypass vulnerability. This allows a remote attacker to gain unauthorized access to user accounts and enumerate valid usernames.
Package Versions Affected
Package Version
patch Availability
No items found.
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CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.7
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
C
H
U
-
C
H
U
-
Related Resources
No items found.
References
https://access.redhat.com/security/cve/CVE-2026-24031
Basic Information
Ecosystem
