SSJS Vulnerability

gistfile1.txt

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});

  if (req.method === 'GET') {
    res.end('Waiting for data....');
  }
  
  if (req.method === 'POST') {
    res.write('Receiving data....');
    var data = '';
    req.addListener('data', function(chunk) {
      data += chunk;
    });
    req.addListener('end', function() {
      myData = eval("(" + data + ")");
      res.end(myData + '\n');
    });
  }
}).listen(80);
console.log('Server listening on port 80');