CVE-2026-2996: Maartenbelmans Advanced Product Fields Product Addons For Woocommerce

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

The Advanced Product Fields (Product Addons) for WooCommerce plugin for WordPress is vulnerable to Improper Input Validation in all versions up to, and including, 1.6.21. This is due to a logic flaw in the 'validate_cart_data' function. This makes it possible for unauthenticated attackers to bypass required paid addons and complete purchases at the base product price only, effectively stealing products by paying a fraction of the intended total. The vulnerability was partially patched in version 1.6.19.

Affected products

• Maartenbelmans Advanced Product Fields Product Addons For Woocommerce: up to and including 1.6.21

Published 2026-08-22. Last modified 2026-08-24.