Large white flowering weed
This large weed popped up quickly in our backyard. I know there are some invasive, dangerous, white flowering weeds in WNY. I am wondering if this is that species, and if not, what it is. Thank you
Erie County New York viburnum
Your plant is a viburnum.
It is hard to see the form from your photo but based on the leaf and flower, it could be the native Viburnum lantanoides or the Asian introduction Viburnum plicatum var. tomentosum. Both are attractive plants that are not undesirable in the garden.