CVE-2026-3138 Missing authorization in Product Filter for WooCommerce by WBW
Unauthenticated attackers can permanently delete all filter configurations in the Product Filter for WooCommerce plugin by exploiting missing authorization checks in AJAX handlers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3138?
CVE-2026-3138 is a medium-severity missing authorization vulnerability in woobewoo Product Filter for WooCommerce by WBW, published on 24 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-3138?
How do I fix CVE-2026-3138?
No fix has been published for CVE-2026-3138 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-3138 being exploited?
There is no known exploitation of CVE-2026-3138 in the wild and no public exploit code.
Sources
Also known as GHSA-r73c-85q5-vm33.