The frontpage option in Limbo CMS 1.0.4.2 and 1.0.4.1 allows remote attackers to execute arbitrary PHP commands via the Itemid parameter in index.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24992
http://www.securityfocus.com/bid/16902
http://www.securityfocus.com/archive/1/429946/100/0/threaded
http://securityreason.com/securityalert/519
http://archives.neohapsis.com/archives/fulldisclosure/2006-02/0728.html