User Registration & Membership Plugin Vulnerability Affecting WordPress
CVE-2026-16736

7.5HIGH

Key Information:

Vendor

WordPress
Status
User Registration & Membership
Vendor
CVE Published:
5 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16736?

The User Registration & Membership plugin for WordPress, prior to version 5.2.6, fails to respect the site's registration-disabled setting during the processing of registration form submissions. This oversight permits unauthenticated users to create new accounts, even if the WordPress administrator has explicitly disabled open registration, thereby posing a significant risk of unauthorized account creation.

Affected Version(s)

User Registration & Membership 0 < 5.2.6

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-2026-16736 - Proof of Concept

References

https://wpscan.com/vulnerability/dc0d63d6-bcd9-4f14-865a-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
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

Nguyễn Đức Hòa
WPScan
.