Unauthenticated Payment Action in Paid Membership Subscriptions Plugin by WordPress
CVE-2026-90951
Currently unrated
Key Information:
- Vendor
WordPress
- Vendor
- CVE Published:
- 23 September 2026
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-90951?
The Paid Membership Subscriptions plugin for WordPress contains a vulnerability that allows unauthenticated attackers to manipulate payment actions. Specifically, it fails to properly bind a particular unauthenticated payment processing action to the requesting user. As a result, if an attacker possesses another user's in-flight payment identifier, they can exploit this security gap to erase that user's checkout state, potentially leading to unauthorized actions within the membership management system.
Affected Version(s)
Paid Membership Subscriptions 0 < 3.1.0
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.