BadBlue 2.72b and earlier allows remote attackers to obtain sensitive information via an invalid browse parameter, which reveals the installation path in an error message.
http://www.vupen.com/english/advisories/2007/4160
http://www.securityfocus.com/bid/26803
http://www.securityfocus.com/archive/1/484834/100/0/threaded
http://securityreason.com/securityalert/3448