CSRF token verification error in django admin using SSL, nginx - django

Question

I have a csrf token error when trying to log in to the django admin in production after adding SSL.
So if I use the configuration below without ssl everything works fine:
upstream app_server {
server unix:/home/app/run/gunicorn.sock fail_timeout=0;
}
server {
listen 80;
# add here the ip address of your server
# or a domain pointing to that ip (like example.com or www.example.com)
server_name 107.***.28.***;
keepalive_timeout 5;
client_max_body_size 4G;
access_log /home/app/logs/nginx-access.log;
error_log /home/app/logs/nginx-error.log;
location /static/ {
alias /home/app/static/;
}
# checks for static file, if not found proxy to app
location / {
try_files $uri #proxy_to_app;
}
location #proxy_to_app {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://app_server;
}
}
But if I change to configuration do listen SSL when filling in any form on the page I get the csrf_token error. My configuration nginx using SSL:
upstream app_server {
server unix:/home/app/run/gunicorn.sock fail_timeout=0;
}
server {
#listen 80;
# add here the ip address of your server
# or a domain pointing to that ip (like example.com or www.example.com)
listen 443 ssl;
server_name example.com;
ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
keepalive_timeout 5;
client_max_body_size 4G;
access_log /home/app/logs/nginx-access.log;
error_log /home/app/logs/nginx-error.log;
# Compression config
gzip on;
gzip_min_length 1000;
gzip_buffers 4 32k;
gzip_proxied any;
gzip_types text/plain application/javascript application/x-javascript text/javascript text/xml text/css;
gzip_vary on;
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
location /static/ {
alias /home/app/static/;
}
# checks for static file, if not found proxy to app
location / {
try_files $uri #proxy_to_app;
}
location #proxy_to_app {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://app_server;
}
}
server {
listen 80;
server_name example.com;
return 301 https://$host$request_uri;
}
server {
listen 80;
server_name www.example.com;
return 301 https://example.com$request_uri;
}
server {
listen 443 ssl;
server_name www.example.com;
return 301 https://example.com$request_uri;
}
How can I fix the error or where to find the bug. I tried to clear cookies, use different browsers, reset the server and server configuration without result.

Answer 1

In Django ≥ 4 it is now necessary to specify CSRF_TRUSTED_ORIGINS in settings.py
CSRF_TRUSTED_ORIGINS = [
'https://your-domain.com'',
'https://www.your-domain.com'
]
See documentation