The Advanced Shipment Tracking for WooCommerce plugin for WordPress is vulnerable to SQL Injection via the…

The Advanced Shipment Tracking for WooCommerce plugin for WordPress is vulnerable to SQL Injection via the tracking_provider parameter of the POST /wp-json/wc-ast/v3/orders/<order_id>/shipment-trackings REST endpoint in all versions up to, and including, 3.9. This is due to insufficient escaping on the user-supplied parameter and lack of sufficient preparation on the existing SQL query in WC_Advanced_Shipment_Tracking_Admin::get_provider_slug_from_name() — the value is concatenated directly into the format string of $wpdb->prepare() rather than bound as a parameter, bypassing parameterised-query protections. This makes it possible for authenticated attackers, with Shop Manager-level access and above, to append additional SQL queries into the already-existing query that can be used to extract sensitive information from the database.