Multiple directory traversal vulnerabilities in SWsoft Plesk for Windows 7.6.1, 8.1.0, and 8.1.1 allow remote attackers to read arbitrary files via a .. (dot dot) in the locale_id parameter to (1) login.php3 or (2) login_up.php3.
http://www.vupen.com/english/advisories/2007/1588
http://www.securityfocus.com/bid/23639
http://secunia.com/advisories/25036
http://forum.swsoft.com/showthread.php?s=&postid=172761#post172761