Add session check to formdata

CHANGELOG.md

@@ -10,6 +10,9 @@ Enterprise fixes:
 - [nps] Fixed bug in the editor where the "internal name" field was not mandatory
 - [ratings] Fixed UI bug where "Internal name" was not a mandatory field
 
+Security:
+- Fixing minor vulnerability that would allow for unauthorized file upload
+
 ## Version 24.05.16
 Fixes:
 - [core] Replaced "Users" with "Sessions" label on technology home widgets

frontend/express/app.js

@@ -603,6 +603,10 @@ Promise.all([plugins.dbConnection(countlyConfig), plugins.dbConnection("countly_
     app.use(function(req, res, next) {
         var contentType = req.headers['content-type'];
         if (req.method.toLowerCase() === 'post' && contentType && contentType.indexOf('multipart/form-data') >= 0) {
+            if (!req.session?.uid || Date.now() > req.session?.expires) {
+                res.status(401).send('Unauthorized');
+                return;
+            }
             var form = new formidable.IncomingForm();
             form.uploadDir = __dirname + '/uploads';
             form.parse(req, function(err, fields, files) {