CVE-2026-0394

Name
CVE-2026-0394
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 version, or use different authentication scheme that does not rely on paths. Alternatively you can also ensure that the per-domain passwd files are in some other location, such as /etc/dovecot/auth/%d. No publicly available exploits are known.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security@open-xchange.com https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:* dovecot >= None < 2.4.0
cpe:2.3:a:open-xchange:dovecot:*:*:*:*:pro:*:*:* dovecot >= None < 3.1.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
dovecot edge-main 2.4.3-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.1-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.1-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.1-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.4.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.3.21.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.3.19.1-r6 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.3.19.1-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.3.15-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot edge-main 2.3.13-r0 None possibly vulnerable
dovecot edge-main 2.3.11.3-r0 None possibly vulnerable
dovecot edge-main 2.3.10.1-r0 None possibly vulnerable
dovecot edge-main 2.3.9.3-r0 None possibly vulnerable
dovecot edge-main 2.3.9.2-r0 None possibly vulnerable
dovecot edge-main 2.3.7.2-r0 None possibly vulnerable
dovecot edge-main 2.3.6-r0 None possibly vulnerable
dovecot edge-main 2.3.5.1-r0 None possibly vulnerable
dovecot edge-main 2.3.4.1-r0 None possibly vulnerable
dovecot edge-main 2.3.1-r0 None possibly vulnerable
dovecot 3.23-main 2.4.3-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot 3.23-main 2.4.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot 3.23-main 2.4.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot 3.22-main 2.4.1-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot 3.22-main 2.3.21.1-r0 None possibly vulnerable
dovecot 3.22-main 2.3.19.1-r5 None possibly vulnerable
dovecot 3.22-main 2.3.15-r0 None possibly vulnerable
dovecot 3.22-main 2.3.13-r0 None possibly vulnerable
dovecot 3.22-main 2.3.11.3-r0 None possibly vulnerable
dovecot 3.22-main 2.3.10.1-r0 None possibly vulnerable
dovecot 3.22-main 2.3.9.3-r0 None possibly vulnerable
dovecot 3.22-main 2.3.9.2-r0 None possibly vulnerable
dovecot 3.22-main 2.3.7.2-r0 None possibly vulnerable
dovecot 3.22-main 2.3.6-r0 None possibly vulnerable
dovecot 3.22-main 2.3.5.1-r0 None possibly vulnerable
dovecot 3.22-main 2.3.4.1-r0 None possibly vulnerable
dovecot 3.22-main 2.3.1-r0 None possibly vulnerable
dovecot 3.21-main 2.3.21.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot 3.21-main 2.3.19.1-r5 None possibly vulnerable
dovecot 3.21-main 2.3.15-r0 None possibly vulnerable
dovecot 3.21-main 2.3.13-r0 None possibly vulnerable
dovecot 3.21-main 2.3.11.3-r0 None possibly vulnerable
dovecot 3.21-main 2.3.10.1-r0 None possibly vulnerable
dovecot 3.21-main 2.3.9.3-r0 None possibly vulnerable
dovecot 3.21-main 2.3.9.2-r0 None possibly vulnerable
dovecot 3.21-main 2.3.7.2-r0 None possibly vulnerable
dovecot 3.21-main 2.3.6-r0 None possibly vulnerable
dovecot 3.21-main 2.3.5.1-r0 None possibly vulnerable
dovecot 3.21-main 2.3.4.1-r0 None possibly vulnerable
dovecot 3.21-main 2.3.1-r0 None possibly vulnerable
dovecot 3.20-main 2.3.21.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot 3.20-main 2.3.19.1-r5 None possibly vulnerable
dovecot 3.20-main 2.3.15-r0 None possibly vulnerable
dovecot 3.20-main 2.3.13-r0 None possibly vulnerable
dovecot 3.20-main 2.3.11.3-r0 None possibly vulnerable
dovecot 3.20-main 2.3.10.1-r0 None possibly vulnerable
dovecot 3.20-main 2.3.9.3-r0 None possibly vulnerable
dovecot 3.20-main 2.3.9.2-r0 None possibly vulnerable
dovecot 3.20-main 2.3.7.2-r0 None possibly vulnerable
dovecot 3.20-main 2.3.6-r0 None possibly vulnerable
dovecot 3.20-main 2.3.5.1-r0 None possibly vulnerable
dovecot 3.20-main 2.3.4.1-r0 None possibly vulnerable
dovecot 3.20-main 2.3.1-r0 None possibly vulnerable
dovecot 3.19-main 2.3.21-r17 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
dovecot 3.19-main 2.3.19.1-r5 None possibly vulnerable
dovecot 3.19-main 2.3.15-r0 None possibly vulnerable
dovecot 3.19-main 2.3.13-r0 None possibly vulnerable
dovecot 3.19-main 2.3.11.3-r0 None possibly vulnerable
dovecot 3.19-main 2.3.10.1-r0 None possibly vulnerable
dovecot 3.19-main 2.3.9.3-r0 None possibly vulnerable
dovecot 3.19-main 2.3.9.2-r0 None possibly vulnerable
dovecot 3.19-main 2.3.7.2-r0 None possibly vulnerable
dovecot 3.19-main 2.3.6-r0 None possibly vulnerable
dovecot 3.19-main 2.3.5.1-r0 None possibly vulnerable
dovecot 3.19-main 2.3.4.1-r0 None possibly vulnerable
dovecot 3.19-main 2.3.1-r0 None possibly vulnerable