How to disable CORS today with Firefox Quantum?

Question

I tried setting this flag to false, but it doesn't work...

security.fileuri.strict_origin_policy

I'm using Firefox Quantum 61.0.1

Any clue?

Regards

Are you trying to access files from your filesystem? Or are you just trying to disable the same origin policy for the WWW? Why not build a sensible development environment which implements CORS properly? — Quentin, Jul 31 '18 at 13:36
Yes. I tried adding custom headers at App.config (C# .Net) unsuccessfully — Flacid_Snake, Jul 31 '18 at 13:43

score 0 · Answer 1 · answered Jul 31 '18 at 14:01

It doesn't work, because the fileuri configuration section is specifically for File URIs, and you are using an HTTP URI.

You need to either:

Load the HTML page your script is running in from the same origin
Figure out why your attempt to enable CORS failed
Install a browser extension to fake CORS support (these tend to be unreliable (especially when a preflight request is needed) and risks you opening yourself up to security issues on the WWW).

1 Answers1