def _inject_metadata_into_fs(metadata, fs, execute=None):
    metadata = dict([(m.key, m.value) for m in metadata])
    _inject_file_into_fs(fs, 'meta.js', jsonutils.dumps(metadata))
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.