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RFC 9207 - OAuth 2.0 Authorization Server Issuer Identification

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OAuth 2.0 Authorization Server Issuer Identification (RFC 9207, )

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RFC 9207: OAuth 2.0 Authorization Server Issuer Identification

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https://datatracker.ietf.org/doc/html/rfc9207

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IETF Datatracker

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This document specifies a new parameter called iss. This parameter is used to explicitly include the issuer identifier of the authorization server in the authorization response of an OAuth authorization flow. The iss parameter serves as an effective countermeasure to "mix-up attacks".

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