CVE-2026-2996CWE-20

CVE-2026-2996

High · published August 22, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
43.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00525 · 43.7th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-08-22T18:16Z
References (4)
https://plugins.trac.wordpress.org/browser/advanced-product-fields-for-woocommerce/trunk/includes/controllers/class-product-controller.php#L130 · [email protected]https://plugins.trac.wordpress.org/changeset/3477476/ · [email protected]https://plugins.trac.wordpress.org/changeset/3483410/ · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/5d9c1c3d-6882-4425-8d32-bdb57b4f133d?source=cve · [email protected]
EPSS history
Timeline
  • 22 AUG 13:27Z
    Advanced Product Fields (Product Addons) for WooCommerce <= 1.6.21 - Unauthenticated Improper Input Validation to Price Bypass via Add-to-Cart POST Request
    cvelistv5