Firstly women are harmed as mothers. The cultural pressures to circumcise their newborn infants mean mothers have to deny or switch off their maternal instinct to protect their baby from any such harm. It interferes with attachment and breastfeeding. This is a psychological and attachment wounding, and many mothers have deep regret about circumcising their infants!
Secondly, women are harmed sexually, when they have sex with a circumcised man, they are denied the cushioning effect of the foreskin, women report greater levels of inability or difficulty with orgasm with circumcised men, and many complain of harsh, chaffing sex with circumcised men. There are at least 3 scientific research studies that now support this:
Women are also harmed by increased risk of HIV infection with a circumcsed man . Circumcised men with HIV infect their female partners at 50%+ higher rates than intact men
I have also been advised by feminists that women feel very disempowered in the whole infant circumcision process. They are disempowered by medical staff who pressure mothers to circumcise, they are disempowered by the hospital system. They are also disempowered by the unequal power relations of a mother who is vulnerable after just giving birth, to be influenced by powerful medical staff with personal and commercial agendas over circumcision.
More reading : http://circumcision.org/how-male-circumcision-harms-women/