CVE-2025-34077
Severity CVSS v4.0:
CRITICAL
Type:
CWE-94
Code Injection
Publication date:
09/07/2025
Last modified:
10/07/2025
Description
An authentication bypass vulnerability exists in the WordPress Pie Register plugin ≤ 3.7.1.4 that allows unauthenticated attackers to impersonate arbitrary users by submitting a crafted POST request to the login endpoint. By setting social_site=true and manipulating the user_id_social_site parameter, an attacker can generate a valid WordPress session cookie for any user ID, including administrators. Once authenticated, the attacker may exploit plugin upload functionality to install a malicious plugin containing arbitrary PHP code, resulting in remote code execution on the underlying server.
Impact
Base Score 4.0
10.00
Severity 4.0
CRITICAL
References to Advisories, Solutions, and Tools
- https://github.com/GTSolutions/Pie-Register
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/wp_pie_register_bypass_rce.rb
- https://pieregister.com/
- https://vulncheck.com/advisories/wordpress-pie-register-plugin-rce
- https://wordpress.org/plugins/pie-register/
- https://www.exploit-db.com/exploits/50395