{"id":"CVE-2023-54392","revision":"c86e3eefab894f5b8eaf96e96954ab6a","records":[{"revision":"c86e3eefab894f5b8eaf96e96954ab6a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-54392","aliases":[],"title":"PocketMine-MP before 4.22.3 Denial of Service via BlockActorDataPacket","description":"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.","state":0,"publishedAt":"2026-09-09T13:31:51.436+00:00","modifiedAt":"2026-10-08T15:21:06.823+00:00","affected":[{"ecosystem":"Vendor product","name":"PocketMine-MP","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"pmmp\",\n                    \"product\": \"PocketMine-MP\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"4.20.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.22.3\"\n                        },\n                        {\n                            \"version\": \"5.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"5.2.1\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:composer/pocketmine/pocketmine-mp\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-7wrv-6h42-w54f","https://github.com/pmmp/PocketMine-MP/commit/0c250a2ef09627b48aa52302f6cc7e1f2afb70ea","https://www.vulncheck.com/advisories/pocketmine-mp-before-4.22.3-denial-of-service-via-blockactordatapacket"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-54392","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-54392","identifiers":["CVE-2023-54392"]},"retained":false,"historicalAffected":[]}],"coverage":[]}