Congratulations to Nat Sakimura and John Bradley for progressing the OAuth 2.0 JWT Secured Authorization Request (JAR) specification from the working group through the IESG to the RFC Editor. This specification takes the JWT Request Object from Section 6 of OpenID Connect Core (Passing Request Parameters as JWTs) and makes this functionality available for pure OAuth 2.0 applications — and intentionally does so without introducing breaking changes.
This is one of a series of specifications bringing functionality originally developed for OpenID Connect to the OAuth 2.0 ecosystem. Other such specifications included OAuth 2.0 Dynamic Client Registration Protocol [RFC 7591] and OAuth 2.0 Authorization Server Metadata [RFC 8414].
The specification is available at:
An HTML-formatted version is also available at:
Again, congratulations to Nat and John and the OAuth Working Group for this achievement!