The attack took place this afternoon when some unidentified people came armed with rods and sharp-edged weapons in Sabara village and attacked the people, police said.
The injured were rushed to a hospital and police personnel have been deployed to prevent any backlash, they said.
Tension had erupted last month in the village following a dispute over immersion of goddess Durga's idol.
More than 60 people were killed and over 40,000 displaced in communal violence that had broken out in Muzaffarnagar and adjoining areas in September this year.