maartenbelmans Advanced Product Fields Plugin up to 1.6.21 on WordPress validate_cart_data input validation

Summaryinfo

A vulnerability, which was classified as problematic, was found in maartenbelmans Advanced Product Fields Plugin up to 1.6.21. This impacts the function validate_cart_data. The manipulation results in input validation. This vulnerability is identified as CVE-2026-2996. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in maartenbelmans Advanced Product Fields Plugin up to 1.6.21. Affected is the function validate_cart_data. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is available at wordfence.com. This vulnerability is traded as CVE-2026-2996 since 02/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

Upgrading to version 1.6.19 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• maartenbelmans

Name

• Advanced Product Fields Plugin

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5
• 1.6.6
• 1.6.7
• 1.6.8
• 1.6.9
• 1.6.10
• 1.6.11
• 1.6.12
• 1.6.13
• 1.6.14
• 1.6.15
• 1.6.16
• 1.6.17
• 1.6.18
• 1.6.19
• 1.6.20
• 1.6.21

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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