Vulnerability in FunnelKit – Funnel Builder for WooCommerce Checkout — CVE-2026-100147

What to do now

Update FunnelKit – Funnel Builder for WooCommerce Checkout to 3.16.0.6 or later.

Affected versions

• Everything up to and including 3.16.0.5

The FunnelKit – Funnel Builder for WooCommerce Checkout plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'shipping_first_name' parameter in all versions up to, and including, 3.16.0.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

This description is reproduced verbatim from the public vulnerability record.

• https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.16.0.5/modules/thankyou-pages/includes/class-wffn-ecomm-tracking.php#L1114
• https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.16.0.5/modules/thankyou-pages/includes/class-wffn-ecomm-tracking.php#L211
• https://plugins.trac.wordpress.org/changeset/3733861/
• https://plugins.trac.wordpress.org/changeset/3733886/funnel-builder/trunk/modules/thankyou-pages/includes/class-wffn-ecomm-tracking.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1807b544-e5fd-403b-85a6-e20bd4f10dec?source=cve

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.