User Registration & Membership Plugin Flaw Allows Unauthorized Role Assignments
CVE-2026-11961

8.1HIGH

Key Information:

Vendor

WordPress
Status
User Registration & Membership
Vendor
CVE Published:
17 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11961?

The User Registration & Membership plugin for WordPress, prior to version 5.2.3, lacks proper validation of membership tiers during public registration. This oversight permits unauthenticated users to register for any available membership tier and receive its corresponding user role automatically. In some instances, this could enable users to gain high-level roles, including that of an administrator, thereby creating significant security risks.

Affected Version(s)

User Registration & Membership 0 < 5.2.3

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-2026-11961 - Proof of Concept

References

https://wpscan.com/vulnerability/2ffab574-8626-472e-b6e4-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Khaled Alenazi (Nxploited)
WPScan
.