CVE-2023-28121: Automattic Woocommerce Payments

Critical severity, CVSS 9.8. EPSS: 86.5% chance of exploitation in the next 30 days.

An issue in WooCommerce Payments plugin for WordPress (versions 5.6.1 and lower) allows an unauthenticated attacker to send requests on behalf of an elevated user, like administrator. This allows a remote, unauthenticated attacker to gain admin access on a site that has the affected version of the plugin activated.

Affected products

• Automattic Woocommerce Payments: from 4.8.0, before 4.8.2 (fixed in 4.8.2); from 5.0.0, before 5.0.4 (fixed in 5.0.4); from 5.1.0, before 5.1.3 (fixed in 5.1.3); from 5.2.0, before 5.2.2 (fixed in 5.2.2); from 5.5.0, before 5.5.2 (fixed in 5.5.2)
• Automattic Woopayments: from 5.6.0, before 5.6.2 (fixed in 5.6.2); version 4.9.0 only; version 5.3.0 only; version 5.4.0 only

Published 2023-04-12. Last modified 2026-06-17.