Mészáros also won eleven medals at the ICF Canoe Sprint World Championships with two golds (K-2 500 m and K-4 500 m: both 1986), eight silvers (K-2 500 m: 1989, 1990, 1991; K-2 5000 m: 1990, 1993; K-4 500 m: 1989, 1990, 1991), and a bronze (K-4 500 m: 1993).