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.
CVSS Details
- CVSS 3.1 Base Score: 7.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade dovecot | Dec 5, 2025 | Oct 31, 2025 |
| Debian | — | Upgrade dovecot | Jul 23, 2026 | Jul 23, 2026 |
| Ubuntu | — | Upgrade dovecot | Oct 30, 2025 | Oct 7, 2025 |
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