hubuum_client diagnostics can expose sensitive request, response, import/export, task, delivery, or server-provided data when applications format or log errors and public models.
When an application configures hubuum_client with ClientBuilder::with_transport, several client operations still use the built-in reqwest client directly. The bypass includes password login, bearer-token validation, authentication-provider discovery, health and readiness probes, export-output downloads, and unified-search streams.
The built-in async and blocking clients used reqwest's default redirect policy. BaseUrl constrains the initial request to the configured origin and path prefix, but redirect processing occurs after that validation. reqwest retains sensitive headers when a redirect changes only the path on the same scheme, host, and port. A redirect from a Hubuum endpoint to another path on a shared origin could therefore carry the bearer Authorization header outside the …