What is CVE-2022-51011?

CVE-2022-51011 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-09-07.

How severe is CVE-2022-51011?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Improper input validation in Pmmp Pocketmine-Mp

CVE-2022-51011

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-09-07 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.004 (36.3th percentile), scored 2026-10-22.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Pmmp Pocketmine-Mp

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672 (vendor-advisory)
github.com/pmmp/PocketMine-MP/commit/df33e179e5d3ff13b56a2d7060bf592b0f797258 (patch)
www.vulncheck.com/advisories/pocketmine-mp-before-4.2.10-denial-of-service-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2022-51011?: CVE-2022-51011 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-09-07.
How severe is CVE-2022-51011?: Medium severity. CVSS v3 base score is 4.3 out of 10.