id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
34888	CSRF verification failed in django 4 when nginx serves the webserver	Muhammad Fazel Samarghandi	nobody	"Hi there
I just created a very simple project and dockerize it with docker-compose:

{{{
version: ""3.8""

services:
  backend:
    build:
      context: .
    command: >
      /bin/sh -c ""
      python manage.py migrate &&
      python manage.py runserver 0.0.0.0:8000""
    ports:
      - 8000:8000
    expose:
      - 8000

  proxy:
    image: nginx
    volumes:
      - type: bind
        source: ./proxy/nginx.conf
        target: /etc/nginx/conf.d/default.conf
        read_only: true
    ports:
      - 80:80
    depends_on: 
      - backend
}}}

And this is the proxy/nginx.conf:
{{{
server {
    listen       80;
    server_name  localhost;
    location / {
        proxy_pass          http://backend:8000;
        proxy_http_version  1.1;
    }

}
}}}
And the Dockerfile:
{{{
FROM python:3
WORKDIR /usr/src/app
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
RUN pip install --upgrade pip
COPY ./requirements.txt .
RUN pip install -r requirements.txt
COPY . .
}}}

There is Django==4.2.5 in requirements.txt and django itself is just super basic and just ALLOWED_HOSTS sets to all.
By running the docker-compose the django can be accessed from port 8000 and 80 by nginx.
The problem is when going to admin panel and send a post request to login, it returns 
{{{
Forbidden (403)
CSRF verification failed. Request aborted.
Reason given for failure:
    Origin checking failed - http://127.0.0.1 does not match any trusted origins.
}}}
and it can't go away with any trick. I also get this in drf and i tried adding ```CSRF_TRUSTED_ORIGINS```, ```CORS_ALLOWED_ORIGINS``` and even commented the csrf middleware, but nothing changed.

As soon as i changed the django version to 3.2 the error is fixed"	Bug	closed	CSRF	4.2	Normal	needsinfo	csrf		Unreviewed	0	0	0	0	0	0