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

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.

We have discovered 2,847 live websites that are affected by CVE-2026-2996.

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Affected Software

Product  Advanced Product Fields For Woocommerce
Category Wordpress Plugins
Vulnerable Domains2,847 live websites (34% of Advanced Product Fields For Woocommerce install base)
Vulnerable Versions
  • from 0 through 1.6.21
Vulnerable Versions Count53 versions ( 95% of all versions)


Common Weakness Enumeration

CWE-20 Improper Input Validation



Details

  • Published - Aug 22, 2026
  • Updated - Aug 24, 2026

Credits

  • Andrés Cruciani (finder)

Website Distribution by Country

Number of websites using CVE-2026-2996
United States642 websites


Germany204 websites
GB202 websites
France173 websites
Netherlands99 websites
Spain99 websites
Australia90 websites
Italy85 websites
Poland84 websites
Canada70 websites

Website Distribution by TLD

Number of websites using CVE-2026-2996
.com1,147 websites
.co.uk139 websites
.de94 websites
.nl85 websites
.org80 websites
.com.au77 websites
.fr64 websites
.it60 websites
.pl59 websites
.net56 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-2996

Top websites that are affected by CVE-2026-2996. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
**********.com Ireland**,***
************.com United States**,***
**********.com United States**,***
*************.org United States**,***
******.com United States***,***
****.org United States***,***
********.nl Netherlands***,***
*****.org United States***,***
*****.com United States***,***
*******.de Germany***,***
See full domain list

FAQ

CVE-2026-2996 is Improper Input Validation in Advanced Product Fields For Woocommerce
A total of 2,847 websites have been identified as vulnerable to CVE-2026-2996, based on global website indexing conducted by WebTechSurvey.
The Advanced Product Fields For Woocommerce is affected by the CVE-2026-2996 vulnerability.
Advanced Product Fields For Woocommerce versions up to and including 1.6.21 are vulnerable to CVE-2026-2996.