{"id":"CVE-2023-54392","summary":"PocketMine-MP before 4.22.3 Denial of Service via BlockActorDataPacket","details":"PocketMine-MP versions \u003e= 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.","aliases":["GHSA-7wrv-6h42-w54f"],"modified":"2026-09-10T03:45:21.391792052Z","published":"2026-09-09T13:31:51.436Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54392.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-20"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54392.json"},{"type":"FIX","url":"https://github.com/pmmp/PocketMine-MP/commit/0c250a2ef09627b48aa52302f6cc7e1f2afb70ea"},{"type":"ADVISORY","url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-7wrv-6h42-w54f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54392"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/pocketmine-mp-before-4.22.3-denial-of-service-via-blockactordatapacket"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pmmp/pocketmine-mp","events":[{"introduced":"54ae4d0ea2429bfb020aa1fae444c5ac9e3dcafb"},{"fixed":"8ebcdb452dac95cf727f6b515bd10ea0505215bd"},{"introduced":"0"},{"fixed":"200e5f940c39ea17a1a16c6afe4b191df15896dd"}],"database_specific":{"source":"DESCRIPTION","extracted_events":[{"introduced":"4.20.0"},{"fixed":"4.22.3"},{"introduced":"0"},{"fixed":"5.2.1"}]}}],"versions":["5.2.0","5.1.3","4.22.2","5.1.2","4.22.1","5.1.1","5.1.0","4.22.0","5.0.1","5.0.0","4.21.1","4.20.4","4.21.0","4.20.3","4.20.2","4.20.1","4.20.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54392.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}