WordPress Cool Tag Cloud plugin cross-site scripting vulnerability

WordPress is the WordPress Foundation’s suite of blogging platforms developed using the PHP language. The platform supports the hosting of personal blog sites on servers with PHP and MySQL. WordPress Cool Tag Cloud plugin in versions prior to 2.26 suffers from a cross-site scripting vulnerability that stems from a lack of data validation filtering of user-supplied data and output. An attacker could exploit the vulnerability to execute JavaScript code on the client side.