Limbo CMS 1.0.4.2 and earlier, with register_globals off, does not protect the $_SERVER variable from external modification, which allows remote attackers to use the _SERVER[REMOTE_ADDR] parameter to (1) conduct cross-site scripting (XSS) attacks in the stats module or (2) execute arbitrary code via an eval injection attack in the wrapper option in index2.php.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-4312
http://www.vupen.com/english/advisories/2005/2932
http://www.securityfocus.com/bid/15871/
http://www.securityfocus.com/archive/1/419470/100/0/threaded
http://securitytracker.com/id?1015364
http://securityreason.com/securityalert/255