CVE-2025-11748 Groups <= 3.7.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Group Join
Authenticated subscribers can join arbitrary groups by manipulating the group ID, bypassing intended access restrictions in the Groups plugin.
- 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-2025-11748?
CVE-2025-11748 is a medium-severity missing authorization vulnerability in itthinx Groups, published on 8 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Groups plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.0 via the 'group_id' parameter of the group_join function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to register for groups other than ones set in the shortcode.
Weakness: CWE-639
Which versions are affected by CVE-2025-11748?
How do I fix CVE-2025-11748?
No fix has been published for CVE-2025-11748 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-2025-11748 being exploited?
There is no known exploitation of CVE-2025-11748 in the wild and no public exploit code.
Sources
Also known as GHSA-jcx9-wjx2-ccx2.