Open Bug 1687370 Opened 2 years ago Updated 2 days ago

Cannot log into when schemeful sameSite cookie is on


(Core :: Networking: Cookies, defect, P2)




Webcompat Priority P3


(Reporter: twisniewski, Unassigned, NeedInfo)


(Blocks 2 open bugs, )


(Whiteboard: [necko-triaged])

As reported in, one cannot log into while in a private browsing window or with strict ETP on.

While trying to log in, I see these two requests are blocked, so it may be related to them:

It turns out that this issue has nothing to do with ETP or TP. I can reproduce this issue with or without ETP.

I have found the root cause of it. This webcompact issue is caused by the cookie sameSite schemeful. Flipping network.cookie.sameSite.schemeful to false will resolve this issue.

No longer blocks: tp-breakage
Component: Privacy: Anti-Tracking → Networking: Cookies
Summary: Cannot log into with Strict mode on → Cannot log into when schemeful sameSite cookie is on
See Also: → schemeful-samesite

FWIW, I can't reproduce this by enable sameSite schemful on chrome.

Severity: -- → S3
Priority: -- → P2
Whiteboard: [necko-triaged]
Webcompat Priority: --- → ?
Webcompat Priority: ? → P3

Can you still reproduce this? Did you create an account for this?

Flags: needinfo?(twisniewski)
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