CORS Error

[ondery]

Bug Description

I previously upgraded from version 1.x.x to 2.1.0, but after encountering CORS errors in the forms, I downgraded to 2.0.2 and the problem was solved. I'm using Docker versions for N8N Queue, Workers, and Webhook; however, despite trying all environment constants, I couldn't resolve the CORS error in 2.1.0 because the Request Header "Origin" property of the forms is automatically set to "null" and cannot be changed.

To Reproduce

1. install 2.1.0 version
2. trigger with form
3. upload any file
4. submit form
5. see request header "Origin" null

Expected behavior

request header "Origin" must be server hosting address

Debug Info

core

• n8nVersion: 2.1.0
• platform: docker (self-hosted)
• nodeJsVersion: 22.21.0
• nodeEnv: production
• database: postgres
• executionMode: scaling (single-main)
• concurrency: -1
• license: enterprise (production)

storage

• success: all
• error: all
• progress: false
• manual: true
• binaryMode: database

pruning

• enabled: true
• maxAge: 336 hours
• maxCount: 10000 executions

client

• userAgent: mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/143.0.0.0 safari/537.36
• isTouchDevice: false

Operating System

Ubuntu Linux 22.04

n8n Version

2.1.0

Node.js Version

22.16.0

Database

MySQL

Execution mode

queue

Hosting

self hosted

[n8n-assistant]

Hey @ondery,

Thank you for reaching out! We’ve received your issue and are looking into it. To help us track this internally, we’ve created a Linear ticket with the reference: "GHC-5939".

We’ll keep you updated as we make progress, but if you have any additional details or context to share, feel free to add them here - it’s always helpful!

Thanks for your patience and for bringing this to our attention.

---

For INTERNAL use only: GHC-5939

[wengooooo]

I have the same question.