Description
PocketMine-MP versions before 3.26.5 and 4.0.5 fail to validate the length of skin data fields submitted by players, allowing uncapped values to exceed the 32767 byte TAG_String limit. Attackers can submit oversized skin data fields like skinID or geometryName to trigger exceptions during NBT data serialization, causing server crashes.
Published: 2026-09-07
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 08 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 07 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Pmmp
Pmmp pocketmine-mp
Vendors & Products Pmmp
Pmmp pocketmine-mp

Mon, 07 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Description PocketMine-MP versions before 3.26.5 and 4.0.5 fail to validate the length of skin data fields submitted by players, allowing uncapped values to exceed the 32767 byte TAG_String limit. Attackers can submit oversized skin data fields like skinID or geometryName to trigger exceptions during NBT data serialization, causing server crashes.
Title PocketMine-MP before 3.26.5 and 4.0.5 Denial of Service via Skin Data
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Pmmp Pocketmine-mp
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-08T12:52:40.245Z

Reserved: 2026-09-05T21:03:47.627Z

Link: CVE-2022-51017

cve-icon Vulnrichment

Updated: 2026-09-08T12:52:29.841Z

cve-icon NVD

Status : Deferred

Published: 2026-09-07T13:17:23.747

Modified: 2026-09-08T19:59:42.500

Link: CVE-2022-51017

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-07T15:00:14Z

Weaknesses