CVE-2026-2996: CWE-20 Improper Input Validation in maartenbelmans Advanced Product Fields (Product Addons) for WooCommerce
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.
AI Analysis
Technical Summary
CVE-2026-2996 describes an improper input validation vulnerability (CWE-20) in the Advanced Product Fields (Product Addons) plugin for WooCommerce. The vulnerability arises from a logic flaw in the 'validate_cart_data' function, which allows unauthenticated attackers to bypass required paid addons during the purchase process. This results in attackers completing purchases at the base product price without paying for addons. The vulnerability affects all versions up to and including 1.6.21. A partial fix was applied in version 1.6.19, but it did not fully resolve the issue.
Potential Impact
Exploitation of this vulnerability allows unauthenticated attackers to bypass payment for required product addons, enabling them to purchase products at a reduced price or for free. This leads to financial loss for merchants using the affected plugin. There is no impact on confidentiality or availability reported, but the integrity of the payment process is compromised.
Mitigation Recommendations
No official patch or complete fix has been confirmed as available. A partial patch was introduced in version 1.6.19, but versions up to and including 1.6.21 remain vulnerable. Users should verify with the vendor for updated patches or mitigations. Until a full fix is released, consider disabling the plugin or restricting access to trusted users only to prevent exploitation.
CVE-2026-2996: CWE-20 Improper Input Validation in maartenbelmans Advanced Product Fields (Product Addons) for WooCommerce
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.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-2996 describes an improper input validation vulnerability (CWE-20) in the Advanced Product Fields (Product Addons) plugin for WooCommerce. The vulnerability arises from a logic flaw in the 'validate_cart_data' function, which allows unauthenticated attackers to bypass required paid addons during the purchase process. This results in attackers completing purchases at the base product price without paying for addons. The vulnerability affects all versions up to and including 1.6.21. A partial fix was applied in version 1.6.19, but it did not fully resolve the issue.
Potential Impact
Exploitation of this vulnerability allows unauthenticated attackers to bypass payment for required product addons, enabling them to purchase products at a reduced price or for free. This leads to financial loss for merchants using the affected plugin. There is no impact on confidentiality or availability reported, but the integrity of the payment process is compromised.
Mitigation Recommendations
No official patch or complete fix has been confirmed as available. A partial patch was introduced in version 1.6.19, but versions up to and including 1.6.21 remain vulnerable. Users should verify with the vendor for updated patches or mitigations. Until a full fix is released, consider disabling the plugin or restricting access to trusted users only to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-23T00:50:08.677Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a89a625acd9273b49149cbb
Added to database: 08/22/2026, 13:37:41 UTC
Last enriched: 08/22/2026, 13:52:06 UTC
Last updated: 08/22/2026, 22:51:37 UTC
Views: 7
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