{"id":"CVE-2026-86203","aliases":["GHSA-f9jp-856v-8642"],"url":"https://o3.security/vulnerability/CVE-2026-86203","summary":"PocketMine-MP before 5.39.2 Item Duplication via Despawn State","details":"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.","published":"2026-09-09T13:32:04.400Z","modified":"2026-09-12T03:30:24.476038844Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"pocketmine/pocketmine-mp","fixedVersion":"5.39.2"}],"fix":{"url":"https://github.com/pmmp/PocketMine-MP/commit/c0719b76b18f2508143134e79bc9f1aa39109683","label":"pmmp/PocketMine-MP@c0719b7"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86203.json"},{"type":"ADVISORY","url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-f9jp-856v-8642"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86203"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/pocketmine-mp-before-5.39.2-item-duplication-via-despawn-state"},{"type":"FIX","url":"https://github.com/pmmp/PocketMine-MP/commit/c0719b76b18f2508143134e79bc9f1aa39109683"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-12T03:30:24.476038844Z"}}