Directory traversal vulnerability in includes/inc.thcms_admin_dirtree.php in MaxCMS 3.11.20b allows remote attackers to read arbitrary files via directory traversal sequences in the thCMS_root parameter.
Improper Limitation of a Pathname to a Restricted Directory The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.