User Registration – Custom Registration Form, Login Form, and User Profile WordPress Plugin, CVE-2026-4056
- CVE, Research URL
- Home page URL
- Application
-
User Registration – Custom Registration Form, Login Form, and User Profile WordPress Plugin
- Published on
- Mar 24, 2026
- Research Description
- The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the Content Access Rules REST API endpoints in versions 5.0.1 through 5.1.4. This is due to the `check_permissions()` method only checking for `edit_posts` capability instead of an administrator-level capability. This makes it possible for authenticated attackers, with Contributor-level access and above, to list, create, modify, toggle, duplicate, and delete site-wide content restriction rules, potentially exposing restricted content or denying legitimate user access.
- Affected versions
-
max 5.1.5.
- Status
-
vulnerable