EUVD-2022-56039

PocketMine-MP versions before 4.4.2 fail to properly validate item IDs received from clients in itemstack NBT data. Attackers can send crafted item IDs outside the valid range to trigger an uncaught exception that crashes the server...

Uncapped length of skin data fields submitted by players

Impact Some skin data fields e.g. skinID, geometryName are not capped in length. These fields are typically saved in the NBT data of a player when the player quits the server, or during an autosave. This is problematic due to the 32767 byte limit on TAGStrings. If any of these fields exceeds 3276...