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.