What is CVE-2026-0394?

CVE-2026-0394 is a medium-severity vulnerability in Dovecot, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-03-27.

How severe is CVE-2026-0394?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Path Traversal in Dovecot

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 characters, path traversal can happen if the domain component is directory partial. This…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (8.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Dovecot
Open-xchange Dovecot
Open-xchange Gmbh Ox Dovecot Pro — versions 0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security@open-xchange.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-0394?: CVE-2026-0394 is a medium-severity vulnerability in Dovecot, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-03-27.
How severe is CVE-2026-0394?: Medium severity. CVSS v3 base score is 5.3 out of 10.