If a Jewess married to a Jew has a child from a non-Jew is that child a mamzer?
Is there agreement amongst the poskim about this?
Mi Yodeya is a question and answer site for those who base their lives on Jewish law and tradition and anyone interested in learning more. It only takes a minute to sign up.Sign up to join this community
I don't know about modern poskim, but the Shulchan Aruch (Even HaEzer 4:19) rules that the child of a gentile and a Jewess independent of her marital status is not a mamzer but is disqualified from marrying a kohein (kohanim in general have stricter strictures restricting marriage). None of the standard commentaries there seem to disagree.