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CVE-2026-2996

Advanced Product Fields (Product Addons) for WooCommerce <= 1.6.21 - Unauthenticated Improper Input Validation to Price Bypass via Add-to-Cart POST Request

HIGH
7.5
CVSS Score
Published: August 22, 2026 at 01:27 PM UTC
Updated: October 12, 2026 at 04:10 PM UTC
1 product affected across 1 vendorAdvanced Product Fields for Woocommerce

Using Advanced Product Fields (Product Addons) for WooCommerce by maartenbelmans?

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Advanced Product Fields for Woocommerce· Maartenbelmanswordpress-plugin
90%
0 ≤ v ≤ 1.6.210

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-20

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