CMS Made Simple (CMSMS) through 2.2.7 allows physical path leakage via an invalid /index.php?page= value, a crafted URI starting with /index.php?mact=Search, or a direct request to /admin/header.php, /admin/footer.php, /lib/tasks/class.ClearCache.task.php, or /lib/tasks/class.CmsSecurityCheck.task.php.