{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.20.0"
              },
              {
                "fixed": "4.22.3"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "5.2.1"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "54ae4d0ea2429bfb020aa1fae444c5ac9e3dcafb"
            },
            {
              "fixed": "8ebcdb452dac95cf727f6b515bd10ea0505215bd"
            },
            {
              "introduced": "0"
            },
            {
              "fixed": "200e5f940c39ea17a1a16c6afe4b191df15896dd"
            },
            {
              "fixed": "0c250a2ef09627b48aa52302f6cc7e1f2afb70ea"
            }
          ],
          "repo": "https://github.com/pmmp/pocketmine-mp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-7wrv-6h42-w54f"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54392.json"
  },
  "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.",
  "id": "CVE-2023-54392",
  "modified": "2026-09-11T03:30:50.556212598Z",
  "published": "2026-09-09T13:31:51.436Z",
  "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"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PocketMine-MP before 4.22.3 Denial of Service via BlockActorDataPacket"
}