GHSA-X746-7M8F-X49C 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...

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...