CVE-2022-51011

Medium

Description

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.

SeverityMedium

CVSS4.3

Exploit probability—

ProductPocketmine/pocketmine-mp

PublishedSep 7, 2026

First seenSep 7, 2026

Weakness typeCWE-20Improper input validation

How to fix

Update

pocketmine/pocketmine-mp4.2.10 or later

Patches

github.com/pmmp/PocketMine-MP/commit/df33e179e5d3ff13b56a2d7060bf592b0f797258

Vendor advisories

github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672

Affected products

Product	Affected versions	Fixed in
pocketmine/pocketmine-mpPackagist	v < 4.2.10	4.2.10

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