The WPLMS theme for WordPress is vulnerable to Privilege Escalation in versions 1.5.2 to 1.8.4.1 via the 'wp_ajax_import_data' AJAX action. This makes it possible for authenticated attackers to change otherwise restricted settings and potentially create a new accessible admin account.
https://wpscan.com/vulnerability/7785
https://twitter.com/_wpscan_/status/564874637679820800?lang=ca
https://themeforest.net/item/wplms-learning-management-system/6780226