maartenbelmans vulnerabilities and threats

The Advanced Product Fields (Product Addons) for WooCommerce plugin for WordPress contains an improper input validation vulnerability in all versions up to and including 1.6.21. This flaw in the 'validate_cart_data' function allows unauthenticated attackers to bypass required paid addons and complete purchases at the base product price, effectively enabling theft of products by paying less than intended. The vulnerability was partially patched in version 1.6.19 but remains present through 1.6.21.

The Advanced Product Fields (Product Addons) for WooCommerce plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.6.17. This is due to missing or incorrect nonce validation on the 'maybe_duplicate' function. This makes it possible for unauthenticated attackers to duplicate and publish product field groups, including draft and pending field groups, via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.