Privilege Escalation Vulnerability in Simple User Registration Plugin for WordPress
CVE-2025-4334

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Simple User Registration
Vendor
CVE Published:
26 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-4334?

The Simple User Registration plugin for WordPress is susceptible to a Privilege Escalation issue arising from inadequate validation of user meta values during the registration process. This vulnerability allows unauthorized attackers to gain administrative privileges simply by registering as a user, thereby compromising the security of the entire WordPress site. Users are encouraged to update to the latest version to mitigate potential threats.

Affected Version(s)

Simple User Registration * <= 6.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-4334
Created by Nxploited

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/wp-registratio...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Cheng Liu
.
CVE-2025-4334 : Privilege Escalation Vulnerability in Simple User Registration Plugin for WordPress