CVE-2026-48817 Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`

Starlette is a lightweight ASGI framework/toolkit. In versions 1.0.1 and below, when dispatching a request, HTTPEndpoint selects the handler by lowercasing the HTTP method and looking it up as an attribute with getattr, without restricting the lookup to a known set of HTTP verbs. When an...