WordPress Custom Popup Builde plugin denial of service vulnerability

WordPress is the Wordpress Foundation’s set of blogging platforms developed using the PHP language. The platform supports the hosting of personal blog sites on PHP and MySQL servers. A denial of service vulnerability exists in versions of the WordPress Custom Popup Builde plugin prior to 1.3.1, which stems from a popup window on each page that automatically loads data that can be sent by an unauthenticated user and is not length-validated The vulnerability can be exploited by attackers to cause a denial of service.