CVE-2026-13329: Unknown Buckaroo Woocommerce Payments Plugin

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

The Buckaroo Woocommerce Payments Plugin WordPress plugin before 4.9.0 does not perform any capability check or nonce validation on an AJAX action that processes payment capture refunds, allowing any authenticated user, including Subscribers, to trigger refunds against captured orders.

Affected products

• Unknown Buckaroo Woocommerce Payments Plugin: before 4.9.0 (fixed in 4.9.0)

Published 2026-08-01. Last modified 2026-08-26.