Language: Python
Label: vulnerable
CWE: NVD-CWE-Other \u2014 Other
NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset.

Code:
def convert_file(filename: str) -> None:
    """
    Parse a Markdown file and dump the output to stdout.
    """
    try:
        with open(filename, "r") as fin:
            rendered = MarkdownIt().render(fin.read())
            print(rendered, end="")
    except OSError:
        sys.stderr.write(f'Cannot open file "{filename}".\n')
        sys.exit(1)