One of the Actaea,used to Cimicifuga. Probably A. alba (pachypoda).

Just to be picky, the species that used to be named Cimicifuga all have dry capsules for fruit. The species with berries have always been Actaeas. And, yep, that looks like an Actaea, though I'm certain Owdboggy knows better which one! : )

The description for Actaea alba specifically mentions the bright red stalks and the pea sized white berries. The other diagnostic tool is the number of leaflets, but that is not obvious from the picture.