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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-86200

PocketMine-MP before 5.42.1 LogDoS via LoginPacket clientData JWT

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

pmmp PocketMine-MP

Default version status: unaffected

  • 0 to < 5.42.1affected
  • 5.42.1unaffected
pkg:composer/pocketmine/pocketmine-mp

References