{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-86203",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-09-05T11:52:36.822Z",
        "datePublished": "2026-09-09T13:32:04.400Z",
        "dateUpdated": "2026-10-08T15:25:48.214Z"
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                "dateUpdated": "2026-10-08T15:25:48.214Z"
            },
            "datePublic": "2026-04-04T00:00:00.000Z",
            "title": "PocketMine-MP before 5.39.2 Item Duplication via Despawn State",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "PocketMine-MP versions before 5.39.2 fail to validate entity despawn state when processing attack packets from clients. Attackers can exploit a race condition by attacking a disconnecting player to trigger multiple death handlers, causing inventory items and experience to drop multiple times for duplication."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Control of a Resource Through its Lifetime",
                            "cweId": "CWE-664",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "pmmp",
                    "product": "PocketMine-MP",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "5.39.2"
                        },
                        {
                            "version": "5.39.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ],
                    "packageURL": "pkg:composer/pocketmine/pocketmine-mp"
                }
            ],
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                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6.3,
                        "baseSeverity": "MEDIUM"
                    }
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                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "NONE",
                        "baseScore": 3.7,
                        "baseSeverity": "LOW"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-f9jp-856v-8642",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "name": "GitHub Security Advisory (GHSA-f9jp-856v-8642)"
                },
                {
                    "url": "https://github.com/pmmp/PocketMine-MP/commit/c0719b76b18f2508143134e79bc9f1aa39109683",
                    "tags": [
                        "patch"
                    ],
                    "name": "Patch Commit"
                },
                {
                    "name": "VulnCheck Advisory: PocketMine-MP before 5.39.2 Item Duplication via Despawn State",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/pocketmine-mp-before-5.39.2-item-duplication-via-despawn-state"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "kostamax27",
                    "type": "reporter"
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                {
                    "lang": "en",
                    "value": "dktapps",
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        "adp": [
            {
                "metrics": [
                    {
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-10T14:18:46.770958Z",
                                "id": "CVE-2026-86203",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-10T14:57:58.125Z"
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