function loadFilterList()
{
    window.$("#stuf_loader").show();

    ajax_call("StudentFilterList.php", loadFilterListCallback, loadFilterListErrors);
}
The software 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 software 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.