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CVE-2025-30189

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Date: October 31, 2025

Dovecot IMAP Server: Using auth caching causes the first lookup to be cached for all lookups

Severity Score

Related Resources (5)

https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2025/oxdc-adv-2025-0001.json
http://seclists.org/fulldisclosure/2025/Oct/29
https://nvd.nist.gov/vuln/detail/CVE-2025-30189
https://seclists.org/oss-sec/2025/q4/97
https://www.mend.io/vulnerability-database/CVE-2025-30189

Severity Score

Weakness Type (CWE)

Improper Preservation of Consistency Between Independent Representations of Shared State

CWE-1250

Top Fix

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Upgrade to version https://github.com/dovecot/core.git - 2.4.2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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