WP Statistics <= 13.1.5 Unauthenticated Stored Cross-Site Scripting via IP

The WP Statistics WordPress plugin is vulnerable to Cross-Site Scripting due to insufficient escaping and sanitization of the IP parameter found in the ~/includes/class-wp-statistics-ip.php file which allows attackers to inject arbitrary web scripts onto several pages that execute when site administrators view a sites statistics, in versions up to and including 13.1.5.