CVE-2026-24031
HIGH
NVD
CVSS Score
7.7
Severity
HIGH
Published
Mar 27, 2026
Vendor
unknown
Description
Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known.