CVE-2026-2996 json
Advanced Product Fields (Product Addons) for WooCommerce <= 1.6.21 - Unauthenticated Improper Input Validation to Price Bypass via Add-to-Cart POST Request
published 2026-08-22 2 mo ago modified 2026-10-12 27 d ago also EUVD-2026-64300
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
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. 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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected products
- maartenbelmans Advanced Product Fields (Product Addons) for WooCommerce
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/5d9c1c3d-6882-4425-8d32-bdb57b4f133d?source=cve
- plugins.trac.wordpress.org /browser/advanced-product-fields-for-woocommerce/trunk/includes/controllers/class-product-controller.php#L130
- plugins.trac.wordpress.org /changeset/3477476/
- plugins.trac.wordpress.org /changeset/3483410/
Sources
- CVE List CVE-2026-2996
- NVD CVE-2026-2996
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