OpenHook <= 4.3.0 - Authenticated (Subscriber+) Remote Code Execution via Shortcode

The OpenHook plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 4.3.0 via the 'php' shortcode. This allows authenticated attackers with subscriber-level permissions or above, to execute code on the server. This requires the [php] shortcode setting to be enabled on the vulnerable site.