The The GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress plugin for WordPress is vulnerable to arbitrary shortcode execution via the gamipress_ajax_get_logs() function in all versions up to, and including, 7.2.1. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
https://wordpress.org/plugins/gamipress/#developers
https://plugins.trac.wordpress.org/changeset/3226227/
https://plugins.trac.wordpress.org/browser/gamipress/trunk/includes/ajax-functions.php#L39