#30732: The default SameSite cookie flag breaks xframe_options_exempt
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Reporter: zerolab | Owner: nobody
Type: Uncategorized | Status: new
Component: CSRF | Version: 2.2
Severity: Normal | Resolution:
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Description changed by zerolab:
Old description:
> {{{xframe_options_exempt}}} is broken with the default setting for
> {{{CSRF_COOKIE_SAMESITE}}} and {{{SESSION_COOKIE_SAMESITE}}} as of
> #27863.
>
> Our use case: an embeddable form started returning 403 when submitted
> after upgrading to 2.2
>
> To reproduce:
> - create a simple form
> - show it on a page with a custom view, decorated with
> {{{xframe_options_exempt}}}
> - load the view in an iframe and try to submit.
>
> At the very least,
> https://docs.djangoproject.com/en/2.2/ref/clickjacking/ could do with a
> note about it.
New description:
{{{xframe_options_exempt}}} is broken with the default setting for
{{{CSRF_COOKIE_SAMESITE}}} and {{{SESSION_COOKIE_SAMESITE}}} (i.e.
{{{Lax}}}) as of #27863.
Our use case: an embeddable form started returning 403 when submitted
after upgrading to 2.2
To reproduce:
- create a simple form
- show it on a page with a custom view, decorated with
{{{xframe_options_exempt}}}
- load the view in an iframe and try to submit.
At the very least, https://docs.djangoproject.com/en/2.2/ref/clickjacking/
could do with a note about it.
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Ticket URL: <https://code.djangoproject.com/ticket/30732#comment:1>
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