    def _normalize_path(self, path, prefix):
        if not path.startswith(os.path.sep):
            path = os.path.join(os.path.sep, path)
        normpath = os.path.normpath(path)
        return os.path.join(prefix, normpath[1:])
The software attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.