Language: JavaScript
Label: vulnerable
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 isExec(command){
  try{
    exec(command, { stdio: 'ignore' })
    return true
  }
  catch (_e){
    return false
  }
}