CVE-2025-4334

The Simple User Registration plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.3. This is due to insufficient restrictions on user meta values that can be supplied during registration. This makes it possible for unauthenticated attackers to register as an administrator.

Score

CVSS 3.1 9.8 Critical

Status

Analyzed - security@wordfence.com

Published

2025-06-26

Last modified

2026-04-08

Weaknesses

CWE-269

Affected products

• Memberhero (Najeebmedia)
• Simple User Registration (Nmedia)

References

• https://plugins.trac.wordpress.org/browser/wp-registration/trunk/inc/classes/class.register.php#L135
• https://plugins.trac.wordpress.org/changeset/3327946/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/c211e0c0-3086-43d2-853c-489f9c42b0ab?source=cve