kdelibs3 -- konqueror FTP command injection vulnerability

Albert Puigsech Galicia reports that Konqueror (more specifically kio_ftp) and Microsoft Internet Explorer are vulnerable to a FTP command injection vulnerability which can be exploited by tricking an user into clicking a specially crafted FTP URI.

It is also reported by Ian Gulliver and Emanuele Balla that this vulnerability can be used to tricking a client into sending out emails without user interaction.