Vulnerability · Published Jun 26, 2025 · Assigned by Wordfence
CVE-2025-4334Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation
Critical 9.8
In plain English
A critical-severity privilege mismanagement in Simple User Registration from nmedia. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 85% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code.
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nmedia | Simple User Registration | 0 – through 6.3 |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H