---
id: CVE-2026-2996
title: >-
  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
summary: >-
  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. …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-20
published: '2026-08-22'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-2996'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/advanced-product-fields-for-woocommerce/trunk/includes/controllers/class-product-controller.php#L130
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3477476/'
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3483410/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/5d9c1c3d-6882-4425-8d32-bdb57b4f133d?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-08-23T04:42:14.780Z'
epss: 0.0049
epssPercentile: 0.41236
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.