Easy US Sales Taxes Add-on for iThemes Exchange before 1.1.0 for WordPress has XSS via add_query_arg() and remove_query_arg().Referenceshttps://blog.sucuri.net/2015/04/security-advisory-xss-vulnerability-affecting-multiple-wordpress-plugins.htmlhttps://ithemes.com/coordinated-wordpress-plugin-security-update/
