Coppermine Photo Gallery before 1.5.20 allows remote attackers to obtain sensitive information via (1) a direct request to plugins/visiblehookpoints/index.php, an invalid (2) page or (3) cat parameter to thumbnails.php, an invalid (4) page parameter to usermgr.php, or an invalid (5) newer_than or (6) older_than parameter to search.inc.php, which reveals the installation path in an error message.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-1625
http://www.waraxe.us/advisory-81.html
http://www.securityfocus.com/bid/52818
http://www.openwall.com/lists/oss-security/2012/04/03/6
http://www.openwall.com/lists/oss-security/2012/03/30/6
http://www.openwall.com/lists/oss-security/2012/03/30/5
http://www.exploit-db.com/exploits/18680
http://forum.coppermine-gallery.net/index.php/topic%2C74682.0.html
http://archives.neohapsis.com/archives/bugtraq/2012-03/0167.html