Language: JavaScript
Label: safe
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:
function getPortFromArgs(args) {
  let port = 9515;
  if (!args)
    return port;
  const portRegexp = /--port=(\d*)/;
  const portArg = args.find(function (arg) {
    return portRegexp.test(arg);
  });
  if (portArg)
    port = parseInt(portRegexp.exec(portArg)[1]);
  return port;
}