CVE-2026-86200
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Sep 09, 2026
Vendor
unknown
Description
PocketMine-MP versions before 5.42.1 contain a denial of service vulnerability in the LoginPacket handler that allows remote attackers to flood warning messages by injecting numerous junk properties into the clientData JWT. Attackers can craft malicious login packets with excessive unknown properties to waste server CPU time and degrade performance.