What is CVE-2026-16621?

CVE-2026-16621 is a medium-severity vulnerability in Payment Gateway For Paypal On Woocommerce, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-08-12.

How severe is CVE-2026-16621?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Payment Gateway For Paypal On Woocommerce

CVE-2026-16621

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 amoun…

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Unknown Payment Gateway For Paypal On Woocommerce — versions 0

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-16621?: CVE-2026-16621 is a medium-severity vulnerability in Payment Gateway For Paypal On Woocommerce, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-08-12.
How severe is CVE-2026-16621?: Medium severity. CVSS v3 base score is 5.3 out of 10.