OIDC login fails with ID-token-only responses after OAuth2 2.x upgrade

david · 15 בספטמבר,‏ 2026,‏ 9:21pm

This should’ve been fixed by:

FIX: Accept an OIDC token response that carries only an id_token (#43587)

committed 03:53PM - 11 Sep 26 UTC

Some providers return a token response with no access token at all, or with an e…mpty `access_token` alongside the `id_token`. `oauth2` 2.x treats `id_token` as one of the keys that can hold the token value, so `AccessToken.from_hash` either takes the `id_token` and removes it from the params, leaving `access_token["id_token"]` nil and the JWT decode failing, or it takes the empty `access_token` and raises "OAuth2::AccessToken has no token". When userinfo is disabled the strategy reads everything it needs from the `id_token`, so build the access token directly and keep the whole parsed response in the params. - The spec for the userinfo-disabled path goes back to an `id_token`-only token response, which is what a provider with no userinfo endpoint sends. - A new case covers a response with a blank `access_token`.

Please let us know if you’re still seeing issues after deploying that commit.

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OIDC login fails with ID-token-only responses after OAuth2 2.x upgrade

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