CVE-2012-1611
Joomla! 2.5.x before 2.5.4 does not properly check permissions, which allows attackers to obtain sensitive "administrative back end" information via unknown attack vectors. NOTE: this might be a duplicate of CVE-2012-1599.
Date published : 2012-09-06
http://developer.joomla.org/security/news/398-20120307-core-information-disclosure.html