CVE-2025-66911 Missing authorization in n/a
Authenticated users can query online status and device info of arbitrary users due to missing authorization checks in Turms IM Server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66911?
CVE-2025-66911 is a medium-severity missing authorization vulnerability in n/a, published on 19 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2025-66911?
It affects 1 product.
Products include Turms-Im Turms.
How do I fix CVE-2025-66911?
No fix has been published for CVE-2025-66911 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-66911 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66911 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-9r66-8r5r-2mqr.