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PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket

Type: advisorySources: OSV

PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-86198
Confirmed fixed CVEs
Not specified
Updated in this feed
8 Nov 2026, 02:26 UTC · Revision 1

Source evidence

PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket

core-osv · Original source

Published 9 Sept 2026, 13:32 UTC

PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.

osv:CVE-2026-86198
Complete source record
{
  "id": "5230ff903dc51ba48fe7d1a5cee487abaeca61a03a393b29e1098199611d7808",
  "url": "https://osv.dev/vulnerability/CVE-2026-86198",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket",
    "summary": "PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.",
    "evidence": "osv:CVE-2026-86198",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-86198",
      "aliases": [
        "CVE-2026-86198",
        "GHSA-pg53-p7qp-65cv"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pmmp/pocketmine-mp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "439c8f2ef527fe2732afaa87872c46194b91b02d"
                },
                {
                  "fixed": "7a27894146a04964ab628ed9033140fdbf887ff3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.44.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7a27894146a04964ab628ed9033140fdbf887ff3"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "5.43.2",
            "5.43.1",
            "5.43.0",
            "5.42.1",
            "5.42.0",
            "5.41.1",
            "5.41.0",
            "5.40.0",
            "5.39.3",
            "5.39.2",
            "5.39.1",
            "5.39.0",
            "5.38.0",
            "5.37.3",
            "5.37.2",
            "5.37.1",
            "5.37.0",
            "5.36.0",
            "5.35.1",
            "5.35.0",
            "5.34.1",
            "5.34.0",
            "5.33.2",
            "5.33.1",
            "5.33.0",
            "5.32.1",
            "5.32.0",
            "5.31.0",
            "5.30.1",
            "5.30.0",
            "5.29.0",
            "5.28.2",
            "5.28.1",
            "5.28.0",
            "5.27.1",
            "5.27.0",
            "5.26.0",
            "5.25.2",
            "5.25.1",
            "5.25.0",
            "5.24.0",
            "5.23.3",
            "5.23.2",
            "5.23.1",
            "5.23.0",
            "5.22.0",
            "5.21.2",
            "5.21.1",
            "5.21.0",
            "5.20.1",
            "5.20.0",
            "5.16.0",
            "5.15.0",
            "5.14.1",
            "5.14.0",
            "5.13.0",
            "5.12.1",
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            "5.11.2",
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            "5.11.0",
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            "5.8.1",
            "5.7.1",
            "5.7.0",
            "5.6.1",
            "5.6.0",
            "5.5.0",
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            "5.3.4",
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            "5.3.2",
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            "5.3.0",
            "5.2.1",
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            "5.1.3",
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            "5.1.0",
            "5.0.1",
            "5.0.0",
            "4.21.1",
            "4.20.4",
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            "4.19.1",
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            "4.18.0-ALPHA1",
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            "4.15.2",
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            "4.9.1",
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            "4.4.2",
            "4.4.1",
            "4.4.0",
            "4.4.0-BETA1",
            "4.1.0-BETA2",
            "4.1.0-BETA1",
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            "3.26.1",
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            "3.15.3",
            "3.15.2",
            "3.15.1",
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            "3.14.3",
            "3.14.2",
            "3.14.1",
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            "3.13.1",
            "3.13.0",
            "3.12.6",
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            "3.0.1",
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            "api/3.0.0-ALPHA12",
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            "api/3.0.0-ALPHA11",
            "1.7dev-677",
            "api/3.0.0-ALPHA10",
            "1.7dev-501",
            "api/3.0.0-ALPHA8",
            "1.7dev-83",
            "api/3.0.0-ALPHA6",
            "1.6.2dev-229",
            "api/3.0.0-ALPHA4",
            "api/3.0.0-ALPHA3",
            "api/3.0.0-ALPHA2",
            "api/3.0.0-ALPHA1",
            "api/2.1.0",
            "1.6.1dev-87",
            "api/2.0.0",
            "1.6dev",
            "api/1.11.0",
            "1.4.1",
            "1.4.1dev-936",
            "1.4-916",
            "1.4",
            "Alpha_1.4dev-900",
            "Alpha_1.4dev-855",
            "Alpha_1.4dev-847",
            "Alpha_1.4dev-842",
            "Alpha_1.4dev-834",
            "Alpha_1.4dev-707",
            "Alpha_1.4dev-665",
            "Alpha_1.4dev-659",
            "Alpha_1.4dev-599",
            "Alpha_1.4dev-576",
            "Alpha_1.4dev-491",
            "Alpha_1.4dev-478",
            "Alpha_1.4dev-449",
            "Alpha_1.4dev-413",
            "Alpha_1.4dev-277",
            "Alpha_1.4dev-228",
            "Alpha_1.3.10",
            "Alpha_1.3.9",
            "Alpha_1.3.8",
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            "Alpha_1.3.5",
            "Alpha_1.3.4",
            "Alpha_1.3.3",
            "Alpha_1.3.2",
            "Alpha_1.3.1",
            "Alpha_1.3",
            "Alpha_1.2.1",
            "Alpha_1.2",
            "Alpha_1.1.1",
            "Alpha_1.1",
            "Alpha_1.0.8",
            "Alpha_1.0.7",
            "Alpha_1.0.6",
            "Alpha_1.0.5",
            "Alpha_1.0.4",
            "Alpha_1.0.3",
            "Alpha_1.0.2",
            "Alpha_1.0.1",
            "Alpha_1.0",
            "pocketmine-mp-rebrand"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86198.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.019474497Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86198.json",
        "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-pg53-p7qp-65cv",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-86198",
        "https://www.vulncheck.com/advisories/pocketmine-mp-before-5.44.2-denial-of-service-via-resourcepackclientresponsepacket",
        "https://github.com/pmmp/PocketMine-MP/commit/7a27894146a04964ab628ed9033140fdbf887ff3"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-837"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86198.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-86198",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521775,
  "published_at": "2026-09-09T13:32:00.417+00:00"
}