Cross-site scripting (XSS) vulnerability in Zaep AntiSpam 2.0 allows remote attackers to inject arbitrary web script or HTML via double encoded slashes (%252F) in the key parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15858
http://www.securityfocus.com/bid/10139
http://www.securiteam.com/windowsntfocus/5EP0I15CKK.html