Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Overview starlette is a The little ASGI library that shines. Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code 'Unsafe Reflection' when dispatching HTTP requests to endpoint attributes via getattr. An attacker can invoke internal...

Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`

Summary 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 HTTPEndpoint subclass is registered through Route... without an explicit methods...