myquiz.pl in Dale Ray MyQuiz 1.01 allows remote attackers to execute arbitrary commands via shell metacharacters in the URL, which are not properly handled as part of the PATH_INFO environment variable.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24501
http://www.vupen.com/english/advisories/2006/0443
http://www.securityfocus.com/archive/1/424266/100/0/threaded
http://www.securityfocus.com/archive/1/423921/100/0/threaded
http://www.corantodemo.net/coranto/viewnews.cgi?id=EpApAAAVkyirPGThSf&style=dldetails
http://securityreason.com/securityalert/409
http://secunia.com/advisories/18737
http://attrition.org/pipermail/vim/2006-February/000537.html