CVE-2026-86203

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.

Scoring

Severity
MEDIUM
CVSS base score
6.3
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS probability
0.27%
CWE
CWE-664
Published
2026-09-09
Last modified
2026-09-10

Affected products

Weakness type

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