User Registration & Membership Plugin Vulnerability in WordPress
CVE-2026-109873

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
User Registration & Membership
Vendor
CVE Published:
11 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-109873?

The User Registration & Membership plugin for WordPress, prior to version 5.3.2, fails to enforce payment-before-login requirements. This oversight allows unauthenticated users to bypass payment restrictions by submitting registrations without selecting a membership type. As a result, these users can create accounts on payment-restricted forms and gain access without completing the necessary payment process.

Affected Version(s)

User Registration & Membership 0 < 5.3.2

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-2026-109873 - Proof of Concept

References

https://wpscan.com/vulnerability/4cce0bb5-eb8e-4452-a6d1-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
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

Filip Kecman
WPScan
.