CORS from localhost

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assertnotnull
Posts: 2
Joined: April 29th, 2014, 3:03 pm

CORS from localhost

Post by assertnotnull »

I have this web UI running locally that was working fine until the latest update of FF 61.
It used to be able to make POST requests to api.slack.com using Fetch (https://developer.mozilla.org/en-US/doc ... cope/fetch) but now it complains about "same origin" and if I try in chrome it's still working. Of course the response from Slack API already allows CORS request from any domain.
Is this a bug or a new security feature that I can't find any documenation about?
This is really annoying.
assertnotnull
Posts: 2
Joined: April 29th, 2014, 3:03 pm

Re: CORS from localhost

Post by assertnotnull »

After all I found out it was privacy badger that suddenly blocked slack
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