A320 Captain reported a fume event that was identified by the flight attendants as a 'dirty socks' odor during descent. After arriving at the gate; the flight crew contacted Maintenance to inspect the aircraft.

Narrative

At approximately XA:41 and descending through 4;000 ft. on the ILS XXL approach into ZZZ; the #1 FA (Flight Attendant) called the flight deck. We did not answer the call due to workload and weather during the approach. After landing and taxiing off the runway; I contacted the #1 FA to inquire about the call. She communicated that they had experienced an odor event during the approach that started in the aft cabin and quickly enveloped the entire cabin. She described the odor as a 'dirty sock smell.' She indicated that the odor seemed to dissipate upon landing. We continued the taxi and parked at the gate. After the checklists were complete; I exited the flight deck and communicated further with the inflight crew. The description of the intensity varied from strong to mild depending upon the inflight crewmembers' past experience. I made my way up the aisle during the deplaning process; but could not detect any lingering odor. The FO (First Officer) did the same after the post-flight walkaround and could not detect an odor in the cabin.I called Maintenance Control and told them that we had experienced a fume/odor event during the approach. I wrote up the event in the maintenance logbook and filled out the form. We secured the aircraft since it was not due to go back out for several hours. Contract Maintenance showed up before we left the aircraft and I briefed them on the event. The entire crew regrouped and discussed the event in the jet bridge. All crewmembers communicated that they were feeling fine and had zero lingering effects from the event.