Cisco WebEx Meeting Center allows remote authenticated users to bypass access control and inject content from a different WebEx site via unspecified vectors, aka Bug ID CSCul36197.
https://exchange.xforce.ibmcloud.com/vulnerabilities/89690
http://www.securitytracker.com/id/1029494
http://www.securityfocus.com/bid/64280
http://tools.cisco.com/security/center/viewAlert.x?alertId=32158
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6964