In this case requests won't be performed from a secure context [1] and
the browser won't send the Sec-Fetch-Site header. This means non-GET
requests will be rejected because CSRF protection will fail.
With this change, we allow these requests with missing Sec-Fetch-Site
headers if:
- They happen over HTTP
- The app is not configured to force SSL
The Origin check happens in any case.
[1] https://developer.mozilla.org/en-US/docs/Web/Security/Defenses/Secure_Contexts#potentially_trustworthy_origins
Rosa Gutierrez
5f390f72df