CVE-2025-30189
Fixed in a distro release EPSS <1%CVSS 7.4
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.
Products: Open-Xchange GmbH OX Dovecot Pro
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.23 | dovecot | 2.4.2-r0 |
| Alpine 3.24 | dovecot | 2.4.2-r0 |
| Debian 13 | dovecot | 1:2.4.1+dfsg1-6+deb13u1 |
| Debian 14 | dovecot | 1:2.4.1+dfsg1-7 |
| SUSE Linux Enterprise Server 16.0 | dovecot24 | 2.4.2-160000.1.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | dovecot24 | 2.4.2-160000.1.1 |
| Ubuntu 25.10 | dovecot | 1:2.4.1+dfsg1-5ubuntu4 |
| openSUSE Leap 16.0 | dovecot24 | 2.4.2-160000.1.1 |
| openSUSE Tumbleweed | dovecot24 | 2.4.2-1.1 |