admin/SA_shipFedExMeter.asp in CandyPress (CP) 4.1.1.26, and possibly other 4.x and 3.x versions, allows remote attackers to obtain the path via a certain value of the FedExAccount parameter.
https://www.exploit-db.com/exploits/4988
https://exchange.xforce.ibmcloud.com/vulnerabilities/39941
http://www.vupen.com/english/advisories/2008/0314
http://www.securityfocus.com/archive/1/487058/100/0/threaded