diff --git a/index.js b/index.js
index 5e5149d..7a59332 100644
--- a/index.js
+++ b/index.js
@@ -336,10 +336,37 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
     }
 
     var isCgiBin = href.match(new RegExp("/cgi-bin(?:$|[?#/])", os.platform() == "win32" ? "i" : ""));
-    if (isCgiBin) {
+    var isScriptExt = scriptExts.indexOf(ext) != -1;
+    
+    if ((href == "/redbrick-interpreters.json" || href == "/redbrick-scriptexts.json" || (os.platform() == "win32" && (href.toLowerCase() == "/redbrick-interpreters.json" || href.toLowerCase() == "/redbrick-scriptexts.json"))) && path.normalize(__dirname + "/../../..") == process.cwd()) {
+      if (!callServerError) {
+        res.writeHead(403, "Forbidden", {
+          "Content-Type": "text/html",
+          "Server": "RedBrick/" + version
+        });
+        res.write(
+            "<html><head><title>403 Forbidden</title></head><body><h1>403 Forbidden</h1><p>You don't have access to specific page.</p><p style=\"font-style: italic; font-weight: normal;\">SVR.JS " +
+                    configJSON.version +
+                    " (" +
+                    os.platform()[0].toUpperCase() +
+                    os.platform().slice(1) +
+                    "; Node.JS/" +
+                    process.version +
+                    ") RedBrick/" +
+                    version +
+                    " " +
+                    (req.headers.host == undefined ? "" : " on " + req.headers.host) +
+                    "</p></body></html>"
+            );
+        res.end(JSON.stringify(exttointerpreteruser, null, 2));
+      } else {
+        callServerError(403, "RedBrick/" + version);
+      }
+    } else {
       fs.stat("." + href, function (err, stats) {
         if (!err) {
           if (!stats.isFile()) {
+            if(isCgiBin || scriptExts.indexOf(".php") != -1) {
             fs.stat("." + href + "/index.php", function (e2, s2) {
               if (!e2 && s2.isFile()) {
                 try {
@@ -389,7 +416,7 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
                     callServerError(500, "RedBrick/" + version, ex);
                   }
                 }
-              } else {
+              } else if(isCgiBin || scriptExts.indexOf(".cgi") != -1) {
                 fs.stat("." + href + "/index.cgi", function (e3, s3) {
                   if (!e3 && s3.isFile()) {
                     try {
@@ -443,9 +470,69 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
                     elseCallback();
                   }
                 });
-              }
+              } else {
+                  elseCallback();
+            }
             });
+            } else if(scriptExts.indexOf(".cgi") != -1) {
+                fs.stat("." + href + "/index.cgi", function (e3, s3) {
+                  if (!e3 && s3.isFile()) {
+                    try {
+                      executeCGIWithEnv(
+                        (href + "/index.cgi").replace(/\/+/g, "/"),
+                        "",
+                        req,
+                        res,
+                        req.socket.localAddress,
+                        req.socket.localPort,
+                        getCustomHeaders ?
+                        getCustomHeaders()["Server"] +
+                        " RedBrick/" +
+                        version :
+                        "SVR.JS/" +
+                        configJSON.version +
+                        " (" +
+                        os.platform()[0].toUpperCase() +
+                        os.platform().slice(1) +
+                        "; Node.JS/" +
+                        process.version +
+                        ") RedBrick/" +
+                        version,
+                        bheaders
+                      );
+                    } catch (ex) {
+                      if (!callServerError) {
+                        res.writeHead(500, "Internal Server Error", abheaders);
+                        res.write(
+                          "<html><head><title>500 Internal Server Error</title></head><body><h1>500 Internal Server Error</h1><p>A server had unexpected exception. Below, the stack trace of the error is shown:</p><code>" +
+                          ex.stack.replace(/\r\n/g, "<br/>").replace(/\n/g, "<br/>").replace(/\r/g, "<br/>").replace(/ /g, "&nbsp;") +
+                          "</code><p>Please contact the developer/administrator of the website.</p><p style=\"font-style: italic; font-weight: normal;\">SVR.JS " +
+                          configJSON.version +
+                          " (" +
+                          os.platform()[0].toUpperCase() +
+                          os.platform().slice(1) +
+                          "; Node.JS/" +
+                          process.version +
+                          ") RedBrick/" +
+                          version +
+                          " " +
+                          (req.headers.host == undefined ? "" : " on " + req.headers.host) +
+                          "</p></body></html>"
+                        );
+                        res.end();
+                      } else {
+                        callServerError(500, "RedBrick/" + version, ex);
+                      }
+                    }
+                  } else {
+                    elseCallback();
+                  }
+                });
+            } else {
+                elseCallback();
+            }
           } else {
+            if(isCgiBin || isScriptExt) {
             try {
               executeCGIWithEnv(
                 href,
@@ -493,6 +580,9 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
                 callServerError(500, "RedBrick/" + version, ex);
               }
             }
+            } else {
+                elseCallback();
+            }
           }
         } else if (err && err.code == "ENOTDIR") {
           function checkPath(pth, cb, a) {
@@ -592,32 +682,6 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
           elseCallback(); //Invoke default error handler
         }
       });
-    } else if ((href == "/redbrick-interpreters.json" || href == "/redbrick-scriptexts.json" || (os.platform() == "win32" && (href.toLowerCase() == "/redbrick-interpreters.json" || href.toLowerCase() == "/redbrick-scriptexts.json"))) && path.normalize(__dirname + "/../../..") == process.cwd()) {
-      if (!callServerError) {
-        res.writeHead(403, "Forbidden", {
-          "Content-Type": "text/html",
-          "Server": "RedBrick/" + version
-        });
-        res.write(
-            "<html><head><title>403 Forbidden</title></head><body><h1>403 Forbidden</h1><p>You don't have access to specific page.</p><p style=\"font-style: italic; font-weight: normal;\">SVR.JS " +
-                    configJSON.version +
-                    " (" +
-                    os.platform()[0].toUpperCase() +
-                    os.platform().slice(1) +
-                    "; Node.JS/" +
-                    process.version +
-                    ") RedBrick/" +
-                    version +
-                    " " +
-                    (req.headers.host == undefined ? "" : " on " + req.headers.host) +
-                    "</p></body></html>"
-            );
-        res.end(JSON.stringify(exttointerpreteruser, null, 2));
-      } else {
-        callServerError(403, "RedBrick/" + version);
-      }
-    } else {
-      elseCallback();
     }
   }
 }
