Low severity · published Sep 9, 2026
CVE-2026-86203
PocketMine-MP before 5.39.2 Item Duplication via Despawn State
3.7
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PocketMine-MP · pmmp
before 5.39.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86203
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86203
vendor-advisory
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-f9jp-856v-8642
patch
https://github.com/pmmp/PocketMine-MP/commit/c0719b76b18f2508143134e79bc9f1aa39109683
third-party-advisory
https://www.vulncheck.com/advisories/pocketmine-mp-before-5.39.2-item-duplication-via-despawn-state
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