CVE-2026-71211: MLflow's AI Gateway accepts an auth_config.api_base value when creating a gateway secret (mlflow/server/handlers.py, _cr

MLflow's AI Gateway has a security flaw where it accepts any web address (api_base) when creating a gateway secret without checking if the address is safe or if it points to internal systems. Any authenticated user, even those with read-only access, can create a secret pointing to internal addresses and use the gateway proxy to reach them, potentially exposing sensitive cloud credentials stored in metadata services (systems that provide configuration information to cloud instances).