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.
CMS Made Simple (CMSMS) through 2.2.7 contains an arbitrary file deletion vulnerability in the admin dashboard via directory traversal sequences in the val parameter within a cmd=del request, because code under modules\FilePicker does not restrict the val parameter.
CMS Made Simple (CMSMS) through 2.2.6 contains a privilege escalation vulnerability from ordinary user to admin user by arranging for the eff_uid value within $_COOKIE[$this->_loginkey] to equal 1, because an SHA-1 cryptographic protection mechanism can be bypassed.
CMS Made Simple (CMSMS) through 2.2.6 allows PHP object injection because of an unserialize call in the _get_data function of \lib\classes\internal\class.LoginOperations.php. By sending a crafted cookie, a remote attacker can upload and execute code, or delete files.