Convert .nessus file(s) to a CSV using mephux/ruby-nessus.

convert.rb

require 'rubygems'
require 'nessus'
require 'csv'

csv = CSV.open("results.csv", "w", force_quotes: true)

csv << ['Plugin ID','CVE','CVSS','Risk','Host','Protocol','Port','Name','Synopsis','Description','Solution','See Also','Plugin Output']

Dir.glob('/PATH_TO_FILE(S)/*.nessus').each do |nessus_file|
  Nessus::Parse.new(nessus_file) do |scan|
    puts "#{scan.title} (#{scan.host_count})"
    
    scan.each_host do |host|
      next if host.event_count.zero?  # Skip if zero vulnerabilities.
      puts host.ip	
      host.each_event do |event|
        csv << [ 
          event.id,
          event.cve,
          event.cvss_base_score,
          event.risk,
          host.ip,
          event.port.protocol,
          event.port.number,
          event.plugin_name,
          event.synopsis,
          event.description,
          event.solution,
          event.see_also,
          event.output
        ]
      end
    end
  end
end