Language: Python
Label: vulnerable
CWE: CWE-200 \u2014 Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Code:
    def _calc_headers(self, info_dict):
        res = merge_headers(self.params['http_headers'], info_dict.get('http_headers') or {})
        if 'Youtubedl-No-Compression' in res:  # deprecated
            res.pop('Youtubedl-No-Compression', None)
            res['Accept-Encoding'] = 'identity'
        cookies = self.cookiejar.get_cookie_header(info_dict['url'])
        if cookies:
            res['Cookie'] = cookies

        if 'X-Forwarded-For' not in res:
            x_forwarded_for_ip = info_dict.get('__x_forwarded_for_ip')
            if x_forwarded_for_ip:
                res['X-Forwarded-For'] = x_forwarded_for_ip

        return res