CVE-2022-51016: Pmmp Pocketmine-Mp

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

PocketMine-MP 3.x (before 3.27.0) does not implement Minecraft Bedrock protocol encryption, so the server cannot verify that a connecting client possesses the private key corresponding to its login token. An attacker who captures a valid login from another player's session (for example by tricking the player into connecting to an attacker-controlled server) can replay that login to impersonate the victim and pass XBOX Live authentication until the JWT token expires (typically 2-3 days). This affects servers directly reachable over the internet that are not behind a proxy with encryption enabled. Fixed in 4.0.0 and backported to 3.27.0.

Affected products

• Pmmp Pocketmine-Mp: from 3.0.0, before 3.27.0 (fixed in 3.27.0)

Published 2026-09-07. Last modified 2026-10-08.