CVE-2022-51009Network attack vector

Server crash via uncaught skin geometry exception

Published Sep 6, 2026 · Updated Sep 10, 2026

Uncaught exception handling in PMMP PocketMine-MP before 4.7.2 allows remote attackers to crash the server with invalid skin geometry JSON. The Skin constructor expects CommentedJsonDecoder::decode() to return false on malformed geometry, but the decoder throws an uncaught RuntimeException. An unauthenticated client can reach the path through a LoginPacket or PlayerSkinPacket, terminating the server without affecting confidentiality or integrity.

CVSS severity7.5
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Uncaught exception handling in PMMP PocketMine-MP before 4.7.2 allows remote attackers to crash the server with invalid skin geometry JSON. The Skin constructor expects CommentedJsonDecoder::decode() to return false on malformed geometry, but the decoder throws an uncaught RuntimeException. An unauthenticated client can reach the path through a LoginPacket or PlayerSkinPacket, terminating the server without affecting confidentiality or integrity.

The record

CVE
CVE-2022-51009
Published
Sep 6, 2026
Updated
Sep 10, 2026
Vendor
PMMP
Product
PocketMine-MP
Classifications
CWE-248, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PMMP · PocketMine-MPversion=0 <4.7.2

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5PMMPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-248Uncaught Exception
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo