CVE-2026-47100
Funnel Builder for WooCommerce Checkout < 3.15.0.3 Missing Authorization via AJAX
- State
- Published
- Severity
- 8.7 High
- Published
- May 19, 2026
- Updated
- Jul 28, 2026
- Reserved
- May 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
Funnel Builder for WooCommerce CheckoutFunnelKit |
|
References
- https://sansec.io/research/funnelkit-woocommerce-vulnerability-exploitedtechnical-description
- https://plugins.trac.wordpress.org/changeset/3530797/funnel-builder/tags/3.15.0.3/modules/checkouts/includes/class-wfacp-ajax-controller.phppatch
- https://www.vulncheck.com/advisories/funnel-builder-for-woocommerce-checkout-missing-authorization-via-ajaxthird-party-advisory
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