def get_severity_detail(severity_detail):
    """
    Retrieve details of severity related fields.

    :param severity_detail: severity details from response
    :return: severity detail
    :rtype: dict
    """
    return {
        'Combined': severity_detail.get('combined', ''),
        'Overridden': severity_detail.get('overridden', ''),
        'Scanner': severity_detail.get('scanner', ''),
        'CvssV2': severity_detail.get('cvssV2', ''),
        'CvssV3': severity_detail.get('cvssV3', ''),
        'Aggregated': severity_detail.get('aggregated', ''),
        'State': severity_detail.get('state', ''),
        'StateName': severity_detail.get('stateName', ''),
        'ExpirationDate': severity_detail.get('expirationDate', '')
    }