Topic guide Writing views

The page_not_found() view is overridden by handler404: The server_error() view is overridden by handler500: The permission_denied() view is overridden by handler403: The bad_request() view is overridden by handler400: NOTE: Use the CSRF_FAILURE_VIEW setting to override the CSRF error > view.

Topic guide Security in Django

Failure to do this can result in CSRF vulnerabilities, and failure to do it correctly can also be dangerous! Set SECURE_SSL_REDIRECT to True, so that requests over HTTP are redirected to HTTPS. Please note the caveats under SECURE_PROXY_SSL_HEADER.

Topic guide Testing tools

classAsyncClient(enforce_csrf_checks=False,raise_request_exception=True,*,headers=None,query_params=None,**defaults)[source] AsyncClient has the same methods and signatures as the synchronous (normal) test client, with the following exceptions: In the initialization, arbitrary keyword arguments in defaults are added directly into the ASGI scope.

Index

… end_index() (Page method) - endswith - field lookup type - Engine (class in django.template) - engines (in module django.template.loader) - ensure_csrf_cookie() (in module django.views.decorators.csrf) - Envelope (class in django.contrib.gis.db.models.functions) - (class in django.contrib.gis.gdal) - envelope (GEOSGeometry attribute) - (OGRGeometry attribute) …

Internals Django Deprecation Timeline

The CSRF_COOKIE_MASKED transitional setting will be removed. The name argument of django.utils.functional.cached_property() will be removed. The opclasses argument of django.contrib.postgres.constraints.ExclusionConstraint will be removed. The undocumented ability to pass errors=None to SimpleTestCase.assertFormError() and assertFormsetError() will be removed. django.contrib.sessions.serializers.PickleSerializer will be removed.

Internals Django Deprecation Timeline

The undocumented check_for_test_cookie method in AuthenticationForm will be removed following an accelerated deprecation. Users subclassing this form should remove calls to this method, and instead ensure that their auth related views are CSRF protected, which ensures that cookies are enabled.

Reference Clickjacking Protection How to use it

… submit a form or access a session cookie within a frame or > iframe, you may need to modify the CSRF_COOKIE_SAMESITE or > SESSION_COOKIE_SAMESITE settings. Changed in Django 5.0: Support for wrapping asynchronous view functions was added to the > …

Reference Logging Django logging extensionsLoggers

To silence a particular type of SuspiciousOperation, you can override that specific logger following this example: Other django.security loggers not based on SuspiciousOperation are: django.security.csrf: For CSRF failures.

Reference Middleware Available middlewareSecurity middleware

WARNING: When your site is served via HTTPS, Django’s CSRF protection system requires the Referer header to be present, so > completely disabling the Referer header will interfere with CSRF > protection.

Reference Model field reference Field types

Don’t allow that. Also note that even an uploaded HTML file, since it can be executed by the browser (though not by the server), can pose security threats that are equivalent to XSS or CSRF attacks.

Reference Request and response objects FileResponse objects

HttpRequest.auser() : > New in Django 5.0. HttpRequest.get_host()[source] : Returns the originating host of the request using information from the HTTP_X_FORWARDED_HOST (if USE_X_FORWARDED_HOST is enabled) and HTTP_HOST headers, in that order.

Topic guide Working with forms HTML forms

POST, coupled with other protections like Django’s CSRF protection offers more control over access.

Topic guide File Uploads Upload Handlers

Also, request.POST is accessed by > CsrfViewMiddleware which is enabled by > default. This means you will need to use > csrf_exempt() on your view to allow you > to change the upload handlers.

Topic guide Middleware Other middleware hooks

The CsrfViewMiddleware class can be > considered an exception, as it provides the > csrf_exempt() and > csrf_protect() decorators which allow > views to explicitly control at what point the CSRF validation should occur.

Topic guide

… in a view function Security in Django Always sanitize user input Cross site scripting (XSS) protection Cross site request forgery (CSRF) protection SQL injection protection Clickjacking protection SSL/HTTPS Host header validation Referrer policy Cross-origin opener policy Session security User-uploaded content …

Topic guide Testing tools The test client

By default, the test client will disable any CSRF checks performed by your site. If, for some reason, you want the test client to perform CSRF checks, you can create an instance of the test client that enforces CSRF checks.

… in a view function Security in Django Always sanitize user input Cross site scripting (XSS) protection Cross site request forgery (CSRF) protection SQL injection protection Clickjacking protection SSL/HTTPS Host header validation Referrer policy Cross-origin opener policy Session security User-uploaded content …

Index

… django.http.Http404 (built-in class) - django.middleware - module - django.middleware.cache - module - django.middleware.clickjacking - module - django.middleware.common - module - django.middleware.csrf - module - django.middleware.gzip - module - django.middleware.http - module - django.middleware.locale - module - django.middleware.security - module - …

Index

… django.forms.fields - django.forms.formsets - django.forms.models - django.forms.renderers - django.forms.widgets - django.http - django.middleware - django.middleware.cache - django.middleware.clickjacking - django.middleware.common - django.middleware.csrf - django.middleware.gzip - django.middleware.http - django.middleware.locale - django.middleware.security - django.shortcuts - django.template - django.template.backends - django.template.backends.django - django.template.backends.jinja2 - …

Index

… CACHES - CACHES-BACKEND - CACHES-KEY_FUNCTION - CACHES-KEY_PREFIX - CACHES-LOCATION - CACHES-OPTIONS - CACHES-TIMEOUT - CACHES-VERSION - CONN_HEALTH_CHECKS - CONN_MAX_AGE - CSRF_COOKIE_AGE - CSRF_COOKIE_DOMAIN - CSRF_COOKIE_HTTPONLY - CSRF_COOKIE_NAME - CSRF_COOKIE_PATH - CSRF_COOKIE_SAMESITE - CSRF_COOKIE_SECURE - CSRF_FAILURE_VIEW - CSRF_HEADER_NAME - CSRF_TRUSTED_ORIGINS - …