A320
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
General Maintenance Action
Aircraft
After deplaning all customers; our flight attendants stated that they smelled musty fumes from the mid to aft cabin area (rows 14-21) during low altitude descent during approach and that the fumes remained until the engines were shut down at the gate. I did not smell any fumes. After obtaining pertinent information from the flight attendants; ZZZ maintenance was notified; and a discrepancy was entered into the aircraft logbook. As was previously stated; the fumes event was brought to our attention only after deplaning was completed and we did not smell fumes in the flight deck.
Air Carrier Captain reported being notified at arrival gate by flight attendant of a fume event.  Cabin fumes began during descent and lasted until engine shutdown at gate.