Vulnerability record · CVE-2025-66911 · published 19 December 2025

CVE-2025-66911: Turms-im turms improper access control vulnerability

TTurms Im · Turms

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.

6.5 CVSS 3.1 Medium EPSS 0.33% · top 76.1% CWE-284 · Improper access controlCWE-639 · Insecure direct object reference

6.5CVSS 3.1 base score

0.33%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

TTurms Turms Im

References

Link	Tags
https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66911_report.md	ExploitThird Party Advisory
https://github.com/turms-im/turms	Product
https://github.com/turms-im/turms/blob/develop/turms-service/src/main/java/im/turms/service/domain/user/access/servicere	Product
https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66911_report.md	ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-66911), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.