[Webkit-unassigned] [Bug 260284] Incorrect Sec-Fetch-Site values on sandboxed iframes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=260284

--- Comment #3 from Vincent Lee <vincentlee at meta.com> ---
Actually, on further reading of the spec, I'm Chrome and FF might be the ones with the bug here. 

Sandboxing an iframe without `allow-same-origin` means the origin becomes opaque, and if I'm reading the language correctly for Sec-Fetch-Site, the algorithm for setting the header asserts that the request is from a "potentially trustworthy origin", which an opaque origin is not.

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