This is a regular verb. It follows the conjugation pattern of the verb comer.
Present:
Todos cometemos errores.
We all make mistakes.
Preterite:
El delantero cometió una falta en el área.
The forward committed a foul in the penalty area.
Present Subjunctive:
Espero que nadie cometa un delito durante la marcha.
I hope no one commits a crime during the march.