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CVE-2025-30189 Affecting dovecot package, versions <1:2.4.1+dfsg1-7

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

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  • Snyk IDSNYK-DEBIANUNSTABLE-DOVECOT-13350432
  • published7 Oct 2025
  • disclosed31 Oct 2025
Report a new vulnerability Found a mistake?

Introduced: 7 Oct 2025

NewCVE-2025-30189  (opens in a new tab)

How to fix?

Upgrade Debian:unstable dovecot to version 1:2.4.1+dfsg1-7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dovecot package and not the dovecot package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

When cache is enabled, some passdb/userdb drivers incorrectly cache all users with same cache key, causing wrong cached information to be used for these users. After cached login, all subsequent logins are for same user. Install fixed version or disable caching either globally or for the impacted passdb/userdb drivers. No publicly available exploits are known.