User Registration & Membership – Custom Registration Form, Login Form, and User Profile: A security weakness
User Registration & Membership – Custom Registration Form, Login Form, and User Profile is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- User Registration & Membership – Custom Registration Form, Login Form, and User Profile
- Plugin slug
user-registration- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Feb 26, 2026
This CVE was published Feb 26, 2026 and is one of 39 known issues for this plugin.
Update, patch or deactivate.
Update User Registration & Membership – Custom Registration Form, Login Form, and User Profile to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.2 via the 'register_member' function, due to missing validation on the 'member_id' user controlled key. This makes it possible for unauthenticated attackers to delete arbitrary user accounts that newly registered on the site who has the 'urm_user_just_created' user meta set.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N