CVE-2026-109988: Product Addons for Woocommerce <= 3.1.8 - Authenticated (Shop Manager+) Stored Cross-Site Scripting via 'type' Field Parameter
The Product Addons for Woocommerce – Product Options with Custom Fields plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'fields[section][fields][row][col][type]' parameter in all versions up to, and including, 3.1.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with shop manager-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs an authenticated WordPress account with Shop Manager-level privileges or higher. Exploitation also requires the attacker to successfully inject script content through the affected type field parameter.
What users are at risk from an injected payload?
The injected script executes when a user accesses a page containing the malicious stored content. This can affect users who view the injected page, while the vulnerability does not require user interaction beyond accessing that page.
Which plugin versions are affected?
All versions of Product Addons for Woocommerce – Product Options with Custom Fields through version 3.1.8, including 3.1.8, are affected.