CVE-2026-0394 — Path Traversal in Dovecot
Severity
5.3MEDIUMNVD
EPSS
0.1%
top 83.89%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 27
Latest updateMar 31
Description
When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed characters, path traversal can happen if the domain component is directory partial. This allows inadvertently reading /etc/passwd (or some other path which ends with passwd). If this file contains passwords, it can be used to authenticate wrongly, or if this is userdb, it can unexpectly make system users appear valid users. Upgrade to fixed versio…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitability: 3.9 | Impact: 1.4
Affected Packages4 packages
🔴Vulnerability Details
3OSV▶
CVE-2026-0394: When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed↗2026-03-27
GHSA▶
GHSA-xmp7-q4wc-cq3x: When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed↗2026-03-27