CVE-2025-12878

The FunnelKit – Funnel Builder for WooCommerce Checkout plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `wfop_phone` shortcode in all versions up to, and including, 3.13.1.2. This is due to insufficient input sanitization and output escaping on the user-supplied `default` attribute. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The following products are affected by CVE-2025-12878 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-12878.

URL	Resource
https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.13.1.2/modules/optins/merge-tags/class-bwf-optin-tags.php#L101
https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.13.1.2/modules/optins/merge-tags/class-bwf-optin-tags.php#L116
https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.13.1.2/modules/optins/merge-tags/class-bwf-optin-tags.php#L30
https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.13.1.2/modules/optins/merge-tags/class-bwf-optin-tags.php#L96
https://plugins.trac.wordpress.org/changeset/3397106/funnel-builder/tags/3.13.1.3/merge-tags/class-bwf-contact-tags.php
https://wordpress.org/plugins/funnel-builder
https://www.wordfence.com/threat-intel/vulnerabilities/id/6f54053e-30ff-449b-b696-92d503011a4d?source=cve