CVE-2023-54392
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 the server by sending a packet containing sign NBT data with an incorrect tag type, triggering an unhandled UnexpectedTagTypeException that terminates the server process.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2023-54392?
- CVE-2023-54392 is a medium-severity vulnerability, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-09-09.
- How severe is CVE-2023-54392?
- Medium severity. CVSS v3 base score is 6.5 out of 10.