HIGH 7.1 NVD
CVE-2023-54392
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 t
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 terminates the server process.
References
- https://github.com/pmmp/PocketMine-MP/commit/0c250a2ef09627b48aa52302f6cc7e1f2afb70ea
- https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-7wrv-6h42-w54f
- https://www.vulncheck.com/advisories/pocketmine-mp-before-4.22.3-denial-of-service-via-blo
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-09-09 via NVD.
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