{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "5.3.1"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "250d18e41bb6fc671cbd2e3d2daaee2e06770b0f"
            },
            {
              "fixed": "4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9"
            }
          ],
          "repo": "https://github.com/pmmp/pocketmine-mp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-79rc-jjh6-rc89"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54355.json"
  },
  "details": "PocketMine-MP versions before 5.3.1 and 4.23.1 fail to validate that the identityPublicKey in LoginPacket uses the required secp384r1 elliptic curve. Attackers can provide LoginPackets with keys using different curves or non-EC key types to pass login verification but trigger an uncaught exception during ECDH key derivation, crashing the server.",
  "id": "CVE-2023-54355",
  "modified": "2026-09-12T03:30:47.224870125Z",
  "published": "2026-09-09T13:31:50.013Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54355.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-79rc-jjh6-rc89"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54355"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/pocketmine-mp-5.2.0-server-crash-via-incorrect-ec-curve"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pmmp/PocketMine-MP/commit/4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve"
}