JSCAPE Secure FTP Applet 4.8.0 and earlier does not ask the user to verify a new or mismatched SSH host key, which makes it easier for remote attackers to perform man-in-the-middle attacks.
https://exchange.xforce.ibmcloud.com/vulnerabilities/43300
http://www.vupen.com/english/advisories/2008/1919/references
http://www.securitytracker.com/id?1020346
http://www.securityfocus.com/bid/29882
http://www.securityfocus.com/archive/1/493652/100/0/threaded
http://www.securityfocus.com/archive/1/493569/100/0/threaded
http://www.jscape.com/sftpapplet/docs/HTML/index.html?introhistory.html