---
id: CVE-2022-51011
title: >-
  PocketMine-MP before 4.2.10 fails to validate the total length of incoming
  chat message blobs before splitting them by newline characters, allowing
  attackers to send large messages containing many newlines
summary: >-
  PocketMine-MP before 4.2.10 fails to validate the total length of incoming
  chat message blobs before splitting them by newline characters, allowing
  attackers to send large messages containing many newlines. Malicious clients
  can send meg…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-20
vendor: pmmp
product: PocketMine-MP
affected:
  - PocketMine-MP < 4.2.10
published: '2026-09-07'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T16:17:06.647'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-51011'
references:
  - url: >-
      https://github.com/pmmp/PocketMine-MP/commit/df33e179e5d3ff13b56a2d7060bf592b0f797258
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/pocketmine-mp-before-4.2.10-denial-of-service-via-chat-messages
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T14:18:58.214646Z'
epss: 0.00432
epssPercentile: 0.34788
ingestedAt: '2026-09-08T20:10:03.178Z'
---

## Overview

PocketMine-MP before 4.2.10 fails to validate the total length of incoming chat message blobs before splitting them by newline characters, allowing attackers to send large messages containing many newlines. Malicious clients can send megabyte-sized chat packets and bombard the server with thousands of such messages, causing server lockups lasting seconds or minutes.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.