CVE-2025-34077
WordPress Pie Register Plugin ≤ 3.7.1.4 Authentication Bypass RCE
- Published
- Jul 9, 2025
- Updated
- May 15, 2026
- Assigning CNA
- VulnCheck
- Evidence observed
- Jul 22, 2025
Primary CVSS
nvd · CVSS 4.0
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:XModerate · next 30 days
- Percentile
- 96.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
4Poc for Unauthenticated Admin Session Hijack - Pie Register Plugin (≤ 3.7.1.4)
- CVE-2025-34077Exploit
WordPress Pie Register ≤ 3.7.1.4 - Admin Privilege Escalation (Unauthenticated)
Responsible use
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