This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Changes on SOP and CORS on Firefox

  • 2 replies
  • 0 have this problem
  • 1 view
  • Last reply by zeroknight

more options

I'm a cybersecurity professional and I'm researching about Same Origin Policy, Cross Origin Resource Sharing and how firefox deal with those things. I've find out that versions before 102.1.0esr, cross-origin script GET requests used to attach cookies (Image 1), but in newer versions, it's not happening (Image 2). I checked the release notes but didn't find nothing about this change.

I would like to learn more about what changed and how Firefox is dealing with cookies, SOP and CORS.

Thanks!

I'm a cybersecurity professional and I'm researching about Same Origin Policy, Cross Origin Resource Sharing and how firefox deal with those things. I've find out that versions before 102.1.0esr, cross-origin script GET requests used to attach cookies (Image 1), but in newer versions, it's not happening (Image 2). I checked the release notes but didn't find nothing about this change. I would like to learn more about what changed and how Firefox is dealing with cookies, SOP and CORS. Thanks!
Attached screenshots

All Replies (2)

more options

It may be due to bug 1802086.

whatwg/fetch#1544 changes the Fetch Standard to remove a web-developer-set Authorization header upon a cross-origin redirect.

According to https://wpt.fyi/results/fetch/api/credentials/authentication-redirection.any.html, all the web browsers already conforms with this spec change.

more options

You can use mozregression to find when the change occurred.