Dovecot · Dovecot · CVE-2026-0394
**Name of the Vulnerable Software and Affected Versions**
Dovecot (affected versions not specified)
**Description**
Dovecot is susceptible to a path traversal issue when configured to use per-domain passwd files. If these files are located one path component above /etc, or if a slash character is included in the allowed characters, an attacker could potentially read sensitive files like /etc/passwd. Accessing this file could lead to incorrect authentication or the appearance of system users as valid users when using a user database. No publicly available exploits are known.
**Recommendations**
Upgrade to a fixed version.
Alternatively, use a different authentication scheme that does not rely on paths.
Ensure that the per-domain passwd files are located in a different directory, such as /etc/dovecot/auth/%d.