CVE-2026-16621
Medium
Description
The Payment Gateway for PayPal on WooCommerce WordPress plugin before 9.2.1 does not verify that payment actually succeeded before completing an order in its PayPal return handler: it reads attacker-controlled parameters, performs no amount comparison and no order-ownership check, and completes the order even when the server-side gateway verification fails, allowing an unauthenticated attacker to mark arbitrary orders as paid without paying.
SeverityMedium
CVSS5.3
Exploit probability—
ProductPayment Gateway for PayPal on WooCommerce
PublishedAug 12, 2026
First seenAug 12, 2026
Weakness typeCWE-345CWE-345
How to fix
Update
- Payment Gateway for PayPal on WooCommerce9.2.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Payment Gateway for PayPal on WooCommerce | v < 9.2.1 | 9.2.1 |
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