Description
Funnel Builder for WooCommerce Checkout prior to 3.15.0.3 contains a missing authorization vulnerability in the public checkout endpoint that allows unauthenticated attackers to invoke internal methods and write arbitrary data to the plugin's External Scripts global setting. Attackers can inject malicious JavaScript through the External Scripts setting that executes in the browsers of all checkout page visitors.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| FunnelKit | Funnel Builder for WooCommerce Checkout | < 3.15.0.3 |
References
- https://plugins.trac.wordpress.org/changeset/3530797/funnel-builder/tags/3.15.0.3/modules/checkouts/includes/class-wfacp-ajax-controller.php
- https://sansec.io/research/funnelkit-woocommerce-vulnerability-exploited
- https://www.vulncheck.com/advisories/funnel-builder-for-woocommerce-checkout-missing-authorization-via-ajax
- https://sansec.io/research/funnelkit-woocommerce-vulnerability-exploited
Timeline
- Published
- May 19, 2026
- Last modified
- Jul 24, 2026
- NVD status
- Deferred