Directory traversal vulnerability in the JCollection (com_jcollection) component for Joomla! allows remote attackers to read arbitrary files via a .. (dot dot) in the controller parameter to index.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/55514
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-0969
http://www.securityfocus.com/bid/37691
http://www.exploit-db.com/exploits/11088
http://packetstormsecurity.org/1001-exploits/joomlajcollection-traversal.txt