---
id: CVE-2022-51013
title: >-
  PocketMine-MP versions before 4.2.3 fail to validate damage metadata values in
  tool and armor item NBT data received from clients
summary: >-
  PocketMine-MP versions before 4.2.3 fail to validate damage metadata values in
  tool and armor item NBT data received from clients. Attackers can send
  negative or out-of-range damage values in itemstack NBT to trigger unhandled
  exceptions…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-20
vendor: pmmp
product: PocketMine-MP
affected:
  - PocketMine-MP < 4.2.3
published: '2026-09-07'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:16:35.917'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-51013'
references:
  - url: >-
      https://github.com/pmmp/PocketMine-MP/commit/c8e1cfcbee4945fd4b63d2a7e96025c59744d4f1
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-46c5-pfj8-fv65
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/pocketmine-mp-before-4.2.3-denial-of-service-via-nbt-metadata
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00508
epssPercentile: 0.4079
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T19:21:46.862496Z'
ingestedAt: '2026-09-08T20:10:03.178Z'
---

## Overview

PocketMine-MP versions before 4.2.3 fail to validate damage metadata values in tool and armor item NBT data received from clients. Attackers can send negative or out-of-range damage values in itemstack NBT to trigger unhandled exceptions in the Durable class, causing server crashes.

## Remediation

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