The User Registration & Membership WordPress plugin before 5.2.2 does not perform an authorization check on a membership-upgrade action and derives the user to modify from a caller-supplied identifier instead of the current user, allowing any authenticated user such as a subscriber to change another user's WordPress role and membership tier.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| User Registration Plugin | — | Update user-registration plugin to version 5.2.2, or a newer patched version | Jul 31, 2026 | Jun 22, 2026 |
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