OAuth 2.0 Authorization Server Issuer Identification
RFC 9207

Received changes through RFC Editor sync (created alias RFC 9207, changed abstract to '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".', changed pages to 9, changed standardization level to Proposed Standard, changed state to RFC, added RFC published event at 2022-03-18, changed IESG state to RFC Published)