The conference menu in ActivePost Standard 3.1 sends passwords of password-protected rooms in cleartext, which could allow remote attackers to gain sensitive information by sniffing the network connection.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17486
http://www.securityfocus.com/bid/11244
http://securitytracker.com/id?1011406
http://secunia.com/advisories/12642/