Directory Traversal vulnerability in FME Modules customfields v.2.2.7 and before allows a remote attacker to obtain sensitive information via the Custom Checkout Fields, Add Custom Fields to Checkout parameter of the ajax.php
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.