{"id":"CVE-2023-54392","aliases":["GHSA-7wrv-6h42-w54f"],"url":"https://o3.security/vulnerability/CVE-2023-54392","summary":"PocketMine-MP before 4.22.3 Denial of Service via BlockActorDataPacket","details":"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.","published":"2026-09-09T13:31:51.436Z","modified":"2026-09-11T03:47:23.856368298Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"pocketmine/pocketmine-mp","fixedVersion":"4.22.3"},{"ecosystem":"Packagist","name":"pocketmine/pocketmine-mp","fixedVersion":"5.2.1"}],"fix":{"url":"https://github.com/pmmp/PocketMine-MP/commit/0c250a2ef09627b48aa52302f6cc7e1f2afb70ea","label":"pmmp/PocketMine-MP@0c250a2"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54392.json"},{"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"},{"type":"FIX","url":"https://github.com/pmmp/PocketMine-MP/commit/0c250a2ef09627b48aa52302f6cc7e1f2afb70ea"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-11T03:47:23.856368298Z"}}