CVE intelligence and bounded remediation

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

Medium CVSS 6.5

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
Medium
CVSS
6.5 (3.1)
Published
2025-12-19
CISA KEV
Not currently listed
Ecosystem
java/maven
Weaknesses
CWE-284, CWE-639

Affected products

  • turms-im / turms / 0.10.0-snapshot

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.