Directory traversal vulnerability in jwpn-photos.php in J-Web Pics Navigator 2.0 allows remote attackers to list arbitrary directories via a .. (dot dot) in the dir parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/32646
http://www.vupen.com/english/advisories/2007/0711
http://www.securityfocus.com/bid/22681
http://www.securityfocus.com/archive/1/460907/100/0/threaded