What is CVE-2026-86203?

CVE-2026-86203 is a low-severity vulnerability in Pmmp Pocketmine-Mp, classified under CWE-664. CVSS score: 3.7/10. Published 2026-09-09.

How severe is CVE-2026-86203?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Pmmp Pocketmine-Mp

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.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Pmmp Pocketmine-mp

Weakness classification (CWE)

CWE-664

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-86203?: CVE-2026-86203 is a low-severity vulnerability in Pmmp Pocketmine-Mp, classified under CWE-664. CVSS score: 3.7/10. Published 2026-09-09.
How severe is CVE-2026-86203?: Low severity. CVSS v3 base score is 3.7 out of 10.