Directory traversal vulnerability in Aspen before 0.22 allows remote attackers to read arbitrary files via a .. (dot dot) to the default URI.
https://exchange.xforce.ibmcloud.com/vulnerabilities/83185
https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-2558
http://www.securityfocus.com/bid/58794
http://www.exploit-db.com/exploits/24915
http://seclists.org/fulldisclosure/2013/Apr/2
http://packetstormsecurity.com/files/121035/Aspen-0.8-Directory-Traversal.html