CVE-2026-2996

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.

• CWE-20

• https://plugins.trac.wordpress.org/browser/advanced-product-fields-for-woocommerce/trunk/includes/controllers/class-product-controller.php#L130
• https://plugins.trac.wordpress.org/changeset/3477476/
• https://plugins.trac.wordpress.org/changeset/3483410/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5d9c1c3d-6882-4425-8d32-bdb57b4f133d?source=cve

Published

Aug 22, 2026

Last Modified

Aug 24, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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