WP Crowdfunding <= 2.2.1 - Authenticated (Shop Manager+) SQL Injection via 'wpneo_reward' Post Meta

The WP Crowdfunding plugin for WordPress is vulnerable to generic SQL Injection via 'wpneo_reward' Post Meta in all versions up to, and including, 2.2.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with shop manager-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This is a second-order injection: a Shop Manager writes the malicious payload once via the WooCommerce REST products endpoint (POST/PUT /wp-json/wc/v3/products/{id}), and the injected query executes on every subsequent public page view that renders the campaign rewards sidebar.