Middle East Security Coordination Act of 2023 This bill requires the Department of State to periodically report to Congress on the activities of the Office of the U.S. Security Coordinator for Israel and the Palestinian Authority (USSC). Specifically, the reports shall be on USSC security coordination and efforts to professionalize Palestinian security forces. The State Department shall also report to Congress on the viability of the inclusion of contributions from additional countries to the USSC, particularly countries party to the Abraham Accords or other Arab or Muslim-majority countries. The bill also reauthorizes U.S. support for the USSC for the first five fiscal years following enactment of the bill.