User Registration & Membership <= 5.1.2 - Unauthenticated Privilege Escalation via Membership Registration

Improper Privilege Management
CVE CVE-2026-1492
CVSS Critical (9.8)
Publicly Published March 2, 2026
Last Updated March 3, 2026
Researcher Foxyyy
Description

The User Registration & Membership – Custom Registration Form Builder, Custom Login Form, User Profile, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to improper privilege management in all versions up to, and including, 5.1.2. This is due to the plugin accepting a user-supplied role during membership registration without properly enforcing a server-side allowlist. This makes it possible for unauthenticated attackers to create administrator accounts by supplying a role value during membership registration.

References

1 affected software package

Software Type Plugin
Software Slug user-registration (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 5.1.2
Patched Version
  • 5.1.3
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