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by phatskat 973 days ago
Not as far as I recall (haven’t done OAuth in a hot minute) but the redirect URL is typically in the GET parameters or in the body of the request, neither of which is hidden from view.

This issue seems to be that there was a secondary redirect in the body of one of the requests (I believe the token response), that could be forged to loosely match a trusted domain but with an attacker’s domain present, eg “//attacker.com/trusted.com/“.