Membership Activation Flaw in Simple Membership Plugin by WordPress
CVE-2026-14936

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Simple Membership
Vendor
CVE Published:
6 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-14936?

The Simple Membership plugin for WordPress, prior to version 4.7.7, exposes a vulnerability that allows unauthenticated individuals to activate or extend memberships. This occurs because the plugin fails to verify that a PayPal payment notification is directed to the configured merchant account of a site. As a result, attackers can exploit this flaw by sending payment notifications from arbitrary PayPal accounts, gaining unauthorized access to membership features.

Affected Version(s)

Simple Membership 0 < 4.7.7

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-2026-14936 - Proof of Concept

References

https://wpscan.com/vulnerability/82ac8cd9-db44-49c7-905c-...
exploitvdb-entrytechnical-description

CVSS V3.1

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

Muni Nitish Kumar Yaddala
WPScan
.