CVE-2025-30189

Summary

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.

Affected Software

Weaknesses

• CWE-1250: Improper Preservation of Consistency Between Independent Representations of Shared State

ADP Enrichment

CVE Program Container

Additional References

• http://seclists.org/fulldisclosure/2025/Oct/29
• http://www.openwall.com/lists/oss-security/2025/10/29/4

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

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

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