CVE-2014-3921
Cross-site scripting (XSS) vulnerability in popup.php in the Simple Popup Images plugin for WordPress allows remote attackers to inject arbitrary web script or HTML via the z parameter.
Date published : 2014-05-30
http://www.securityfocus.com/bid/67562
http://packetstormsecurity.com/files/126763/WordPress-Simple-Popup-Cross-Site-Scripting.html