Mészáros also won five medals at the ICF Canoe Sprint World Championships with a gold (K-2 1000 m: 1954), three silvers (K-1 4 × 500 m: 1958, K-4 1000 m: 1958, K-4 10000 m: 1971), and a bronze (K-4 10000 m: 1954).