Language: Python
Label: vulnerable
CWE: CWE-78 \u2014 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Code:
    def __init__(self, *args, env=None, text=False, **kwargs):
        if env is None:
            env = os.environ.copy()
        self._fix_pyinstaller_ld_path(env)

        self.__text_mode = kwargs.get('encoding') or kwargs.get('errors') or text or kwargs.get('universal_newlines')
        if text is True:
            kwargs['universal_newlines'] = True  # For 3.6 compatibility
            kwargs.setdefault('encoding', 'utf-8')
            kwargs.setdefault('errors', 'replace')
        super().__init__(*args, env=env, **kwargs, startupinfo=self._startupinfo)