The "Upload new image" command in the "Manage Images" eFiction 1.1, when members are allowed to upload images, allows remote attackers to execute arbitrary PHP code by uploading a filename with a .php extension that contains a GIF header, which passes the image validity check but executes any PHP code within the file.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-4166
http://www.securityfocus.com/bid/15568
http://www.efiction.wallflowergirl.com/forums/viewtopic.php?t=1555
http://securitytracker.com/id?1015273
http://secunia.com/advisories/17777
http://rgod.altervista.org/efiction2_xpl.html
http://archives.neohapsis.com/archives/bugtraq/2005-11/0301.html