Language: Python
Label: vulnerable
CWE: CWE-22 \u2014 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
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.

Code:
def untar_file(tar_path, dst_path):
    with tarfile.open(tar_path , mode='r') as tfile:
        tfile.extractall(path=dst_path)