PocketMine-MP versions before 3.15.4 contain a denial of service vulnerability in the InventoryTransaction component's findResultItem() method. Malicious clients can send specially crafted InventoryTransactionPackets with multiple conflicting pathways to cause exponential processing complexity, freezing the server.
{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.15.4"
}
],
"source": "DESCRIPTION"
},
{
"range": [
{
"fixed": "c368ebb5e74632bc622534b37cd1447b97281e20"
}
],
"source": "REFERENCES_COMMIT"
}
]
}