CVE-2025-34077
CRITICAL EPSS 95.0%
Published Jul 9, 202511mo ago · Modified Jun 17, 20261w ago
10.0 CVSS 4.0
Published Jul 9, 2025 11mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
95.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 3
CWE-306 Missing Authentication for Critical Function Authentication
CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt
CWE-94 Improper Control of Generation of Code (Code Injection) Injection
References 6
- github.com https://github.com/GTSolutions/Pie-Register
- github.com https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/wp_pie_register_bypass_rce.rb
- pieregister.com https://pieregister.com/
- vulncheck.com https://vulncheck.com/advisories/wordpress-pie-register-plugin-rce
- wordpress.org https://wordpress.org/plugins/pie-register/
- exploit-db.com https://www.exploit-db.com/exploits/50395
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.