---
id: "CVE-2026-109988"
kind: "vulnerability"
aliases: ["CVE-2026-109988"]
title: "WooCommerce Product Addons plugin: stored XSS via field type parameter"
severity: "medium"
cvss: 4.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "woocommerce", "wordpress", "wp-plugin"]
not_affected_if: ["auth-required"]
published_at: "2026-10-28T07:16:45+00:00"
first_seen_at: "2026-10-28T07:31:38+00:00"
updated_at: "2026-10-28T07:33:25+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109988", "first_seen_at": "2026-10-28T07:31:38+00:00"}]
---

# WooCommerce Product Addons plugin: stored XSS via field type parameter

The Product Addons for WooCommerce plugin (all versions up to and including 3.1.8) does not sanitize the 'fields[section][fields][row][col][type]' parameter. An authenticated shop manager can store a script that runs in the browser of anyone who loads the injected page.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of the 'Product Addons for Woocommerce' plugin in the WordPress admin under Plugins; affected if it is `3.1.8` or older.
- unknown

## Fix

- Update the 'Product Addons for Woocommerce – Product Options with Custom Fields' plugin to a version newer than `3.1.8`; the sources do not name the fixed version.

## Timeline

- 2026-10-28T07:31:38+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109988

## From the sources

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.

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