CVE-2026-11966 User Registration & Membership < 5.2.3 - Unauthenticated Limited User Deletion via Stripe Subscription Handler
Unauthenticated attackers can delete recently-registered user accounts by exploiting a missing capability check in the Stripe subscription handler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11966?
CVE-2026-11966 is a medium-severity missing authorization vulnerability in Unknown User Registration & Membership, published on 17 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The User Registration & Membership WordPress plugin before 5.2.3 does not perform a capability check for unauthenticated callers on one of its membership payment actions and acts on a caller-supplied user identifier, allowing unauthenticated attackers to delete recently-registered, payment-pending user accounts.
Weakness: CWE-639
Which versions are affected by CVE-2026-11966?
How do I fix CVE-2026-11966?
No fix has been published for CVE-2026-11966 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-2026-11966 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11966 exists.
Sources
Also known as GHSA-2wp6-4gxm-vfvx.