Directory traversal vulnerability in help.php in the eskuel module in KwsPHP 1.3.456, as available before 20080416, allows remote attackers to execute arbitrary commands via the action parameter. NOTE: some of these details are obtained from third party information.
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.