Unrestricted file upload vulnerability in editor/extensions/browser/file.php in the Joomla Content Editor (JCE) component before 2.1 for Joomla!, when chunking is set to greater than zero, allows remote authors to execute arbitrary PHP code by uploading a PHP file with a double extension as demonstrated by .jpg.pht.
https://exchange.xforce.ibmcloud.com/vulnerabilities/75671
http://www.securityfocus.com/bid/51002
http://www.joomlacontenteditor.net/news/item/jce-21-released?category_id=32
http://secunia.com/secunia_research/2012-15/