What’s Vulnerable › Vulnerabilities
CVE-2026-109988: Product Addons for Woocommerce <= 3.1.8 - Authenticated (Shop Manager+) Stored Cross-Site Scripting via 'type' Field Parameter
- Severity: medium (CVSS 4.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-28 · updated 2026-10-29
- Weakness: CWE-79
Description
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 products
References
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/backend/api.php#L237
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/helper.php#L284
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/process/cart.php#L109
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/process/process.php#L262
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/templates/cart/cart-item-data.php#L14
- https://plugins.trac.wordpress.org/changeset/3756829/woo-custom-product-addons/trunk/templates/cart/cart-item-data.php
- https://wordpress.org/plugins/woo-custom-product-addons/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/99c24e6f-396a-45bd-b16e-cb3b30aff25c?source=cve
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