Disney says
Mini All-Beef Patty on an Allergy-friendly Roll with a Cuties® Mandarin, Carrots and choice of Small Lowfat Milk or Small DASANI® Water. Meets Disney Nutrition Guidelines for Complete Meals without substitutions.
Friendliest.app says
The hamburger can be served on an allergy-friendly roll that is free of gluten/wheat, dairy/milk, fish, shellfish, peanuts, tree nuts and soy.

This meal contains eggs (bun). It can be made milk/dairy-friendly by selecting water instead of milk. 

If ordered with a standard roll, this meal is egg-friendly, but contains other allergens.