Multiple cross-site scripting (XSS) vulnerabilities in Blackboard Learning System 6, Blackboard Learning and Community Portal Suite 6.2.3.23, and Blackboard Vista 4 allow remote attackers to inject arbitrary Javascript, VBScript, or HTML via (1) data, (2) vbscript, and (3) malformed javascript URIs in various HTML tags when posting to the Discussion Board.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28537
http://www.vupen.com/english/advisories/2006/3366
http://www.securityfocus.com/bid/19308
http://www.securityfocus.com/archive/1/444885/100/0/threaded
http://www.securityfocus.com/archive/1/444116/100/0/threaded
http://www.securityfocus.com/archive/1/444062/100/0/threaded