CVE-2025-30189

High

Description

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.

SeverityHigh
CVSS7.4
Exploit probability—
ProductOX Dovecot Pro
PublishedOct 31, 2025
First seenOct 31, 2025
Weakness typeCWE-1250CWE-1250

How to fix

Affected products

ProductAffected versionsFixed in
Open-Xchange GmbH OX Dovecot Prov ≤ 3.1.0, v ≤ 2.4.0—

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