CVE-2026-3138

The Product Filter for WooCommerce by WBW plugin for WordPress is vulnerable to unauthorized data loss due to a missing capability check in all versions up to, and including, 3.1.2. This is due to the plugin's MVC framework dynamically registering unauthenticated AJAX handlers via `wp_ajax_nopriv_` hooks without verifying user capabilities, combined with the base controller's `__call()` magic method forwarding undefined method calls to the model layer, and the `havePermissions()` method defaulting to `true` when no permissions are explicitly defined. This makes it possible for unauthenticated attackers to truncate the plugin's `wp_wpf_filters` database table via a crafted AJAX request with `action=delete`, permanently destroying all filter configurations.

The following products are affected by CVE-2026-3138 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3138.

URL	Resource
https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.1.0/classes/controller.php#L99
https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.1.0/classes/frame.php#L280
https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.1.0/classes/frame.php#L416
https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.1.0/classes/table.php#L345
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3487143%40woo-product-filter%2Ftrunk&old=3479545%40woo-product-filter%2Ftrunk&sfp_email=&sfph_mail=#file2
https://wordpress.org/plugins/woo-product-filter/
https://www.wordfence.com/threat-intel/vulnerabilities/id/085a4fae-c3f4-45f9-ab30-846c6297d04e?source=cve