A 103Anyone struck by the corruptor of fate's short sword attack must make the save or be affected by the curse. Regardless of whether or not they fail to save against the curse, they still take damage.
This does not appear to apply to its composite shortbow attack- the attack does not have "bestow curse" listed with its damage. This makes sense- the curse affects those "touching or touched by... its weapons" and someone hit by an arrow is not touching the weapon, as arrows are ammunition not weapons.