diff --git a/lib/proxy.js b/lib/proxy.js
index 1d876c0..1ca98bf 100755
--- a/lib/proxy.js
+++ b/lib/proxy.js
@@ -190,6 +190,7 @@ ReverseProxy.prototype.setupHttpProxy = function (proxy, websocketsUpgrade, log,
   var httpServerModule = opts.serverModule || http;
   var server = (this.server = httpServerModule.createServer(function (req, res) {
     var src = _this._getSource(req);
+    res = allowCORS(res, opts);
     _this
       ._getTarget(src, req, res)
       .bind(_this)
@@ -771,6 +772,14 @@ function redirectToHttps(req, res, target, ssl, log) {
   res.end();
 }
 
+function allowCORS(res, opts){
+  if(opts.cors && opts.cors.allow === true){
+    res.setHeader("Access-Control-Allow-Origin", "*");
+    res.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
+  }
+  return res
+}
+
 function startsWith(input, str) {
   return (
     input.slice(0, str.length) === str && (input.length === str.length || input[str.length] === '/')