CVE-2023-54392: Improper Input Validation

PocketMine-MP versions = 4.20.0 before 4.22.3 and before 5.2.1 in the 5.x branch fail to validate NBT tag types in BlockActorDataPacket. A player can crash the server by sending a packet containing sign NBT data with an incorrect tag type, triggering an unhandled UnexpectedTagTypeException that...