Missing Authorization

Summary

Budibase exposes a REST API for datasource management. The route `PUT /api/datasources/:datasourceId` is registered in the `authorizedRoutes` group with `TABLE/READ` permission. This is the same authorization level as the read endpoint (`GET /api/datasources/:datasourceId`). Every authenticated Budibase app user with the `BASIC` built-in role or higher carries `TABLE/WRITE` (and therefore `TABLE/READ`) permissions, and the datasource update controller performs no additional builder check.As a result, any authenticated non-builder app user can submit a PUT request to rewrite a datasource's config object -- including the connection host, port, database credentials, or the base url of a REST datasource. Because no network-level SSRF protection is applied to SQL driver connections, redirecting a PostgreSQL/MySQL/MongoDB datasource to an internal IP address succeeds and the attacker can probe or interact with internal services on arbitrary ports. Versions prior to 3.38.1 are affected.