Payment Notification Verification Flaw in WooCommerce PayPal Plugin
CVE-2026-92400

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Payment Gateway For Paypal On WooCommerce
Vendor
CVE Published:
21 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-92400?

The WooCommerce PayPal Payment Gateway plugin for WordPress contains a vulnerability where it fails to validate incoming payment notifications properly. Specifically, prior to version 9.2.1, the plugin does not confirm that a payment notification is associated with the store's own merchant account before marking an order as complete. This oversight enables unauthenticated users to exploit the system by manipulating the payment notification process, allowing them to falsely mark their orders as paid using a test transaction from a controlled payment sandbox.

Affected Version(s)

Payment Gateway for PayPal on WooCommerce 0 < 9.2.1

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-2026-92400 - Proof of Concept

References

https://wpscan.com/vulnerability/3dcee743-a95d-4233-b78e-...
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

Charles Vosburgh
WPScan
.