CVE-2026-3601 Missing authorization in User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
Authenticated contributors can modify arbitrary page content due to missing capability checks in the User Registration & Membership 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-2026-3601?
CVE-2026-3601 is a medium-severity missing authorization vulnerability in wpeverest User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder, published on 5 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.
Weakness: CWE-862
Which versions are affected by CVE-2026-3601?
How do I fix CVE-2026-3601?
No fix has been published for CVE-2026-3601 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-2026-3601 being exploited?
There is no known exploitation of CVE-2026-3601 in the wild and no public exploit code.
Sources
Also known as GHSA-82vf-3973-8g6r.