WordPress Pie Register Plugin ≤ 3.7.1.4 Authentication Bypass RCE
Vulnerability 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 Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Lotfi13-DZ
References
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/wp_pie_register_bypass_rce.rb
- https://www.exploit-db.com/exploits/50395
- https://pieregister.com/
- https://github.com/GTSolutions/Pie-Register
- https://wordpress.org/plugins/pie-register/
- https://vulncheck.com/advisories/wordpress-pie-register-plugin-rce
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