Cross-site scripting (XSS) vulnerability in Joomla! 2.5.x before 2.5.7 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/79725
http://www.openwall.com/lists/oss-security/2012/10/19/4
http://www.openwall.com/lists/oss-security/2012/10/07/3
http://www.joomla.org/announcements/release-news/5463-joomla-2-5-7-released.html
http://secunia.com/advisories/49678
http://developer.joomla.org/security/news/539-20120901-core-xss-vulnerability