Multiple cross-site scripting (XSS) vulnerabilities in Webcit before 7.11 allow remote attackers to inject arbitrary web script or HTML via (1) the who parameter to showuser; and other vectors involving (2) calendar mode, (3) bulletin board mode, (4) room names, and (5) uploaded file names.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35433
http://www.securityfocus.com/archive/1/473714/100/0/threaded
http://securityreason.com/securityalert/2890