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CVE-2025-66911

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Date: December 19, 2025

Turms IM Server v0.10.0-SNAPSHOT and earlier contains a broken access control vulnerability in the user online status query functionality. The handleQueryUserOnlineStatusesRequest() method in UserServiceController.java allows any authenticated user to query the online status, device information, and login timestamps of arbitrary users without proper authorization checks.

Severity Score

Related Resources (5)

https://github.com/turms-im/turms/blob/develop/turms-service/src/main/java/im/turms/service/domain/user/access/servicerequest/controller/UserServiceController.java#L239
https://nvd.nist.gov/vuln/detail/CVE-2025-66911
https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66911_report.md
https://github.com/turms-im/turms
https://www.mend.io/vulnerability-database/CVE-2025-66911

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Authorization Bypass Through User-Controlled Key

CWE-639

CVSS v3.1

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

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