Resource exhaustion in PocketMine-MP - CVE-2020-37277
Published: November 10, 2020 / Updated: September 14, 2026
Vulnerability identifier: #VU125422
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-37277
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in InventoryTransaction->findResultItem() when processing specially crafted InventoryTransactionPackets. A remote attacker can send specially crafted InventoryTransactionPackets to cause a denial of service.
The issue is triggered when multiple pathways to a result exist, causing exponential complexity during flattening of conflicting InventoryActions within the same InventoryTransaction.
Affected software
PocketMine-MP
How to mitigate CVE-2020-37277
Install security update from vendor's website.
PocketMine-MP - update to 3.15.4