To follow up on this:
If we move the client_id+client_secret into the Authorization header, we
seem to bypass the 500, but now end up with:
{"body":{"meta":{"error":"Invalid username or password"}}}}

This also seems suboptimal, especially since I know the credentials used
are correct.
-- 
Tom Strickx
Principal Network Engineer
AS13335 - Cloudflare


On Mon, Mar 2, 2026 at 2:33 PM Tom Strickx <[email protected]> wrote:

> Hey,
>
> Since the upgrade, our (peering.cloudflare.com) PeeringDB integration
> broke.
> Specifically, it looks like we're getting 500s now from
> https://auth.peeringdb.com/oauth2/token/
>
> We do a POST to that endpoint with the following:
>
> redirect_uri: "https://net.cloudflareaccess.com/cdn-cgi/access/callback";
> code: ...
> grant_type: 'authorization_code'
> client_id: ...
> client_secret: ...
>
> We're not too sure what changed, given this used to work, and we haven't 
> touched anything on our end.
>
> Does anyone have any idea what could be going on? Or, ideally, someone who 
> can look at the backend and tell us what's dying?
>
> Any and all insights appreciated
>
> --
> Tom Strickx
> Principal Network Engineer
> AS13335 - Cloudflare
>
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