CVE-2025-66911

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.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-25)

CWEs

CWE-284, CWE-639

Published

2025-12-19

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

Affected

• turms-im:turms

References

• https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66911_report.md
• https://github.com/turms-im/turms
• 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://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66911_report.md

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