server: Validate path for bad components in a handler. (#4170)

cmd/routers.go

@@ -85,6 +85,8 @@ func configureServerHandler(srvCmdConfig serverCmdConfig) (http.Handler, error)
 
 	// List of some generic handlers which are applied for all incoming requests.
 	var handlerFns = []HandlerFunc{
+		// Validate all the incoming paths.
+		setPathValidityHandler,
 		// Network statistics
 		setHTTPStatsHandler,
 		// Limits all requests size to a maximum fixed limit