MAXcms contains a flaw that may allow a remote attacker to execute arbitrary commands. The issue is due to the 'classes/class.Tree.php' script not properly sanitizing user input supplied to the 'GLOBALS[thCMS_root]' parameter. This may allow an attacker to include a file from an arbitrary remote host that contains commands which will be executed by the vulnerable script with the same privileges as the web server.
Remote / Network Access
Loss of Integrity
Upgrade to version 3.16.9 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.