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CVE-2022-51018 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

PocketMine-MP before 3.26.5 and 4.0.x before 4.0.5 does not limit book page text length, page count, or author/title length. A player who obtains a writable book can create oversized NBT ('book bombs'), causing excess bandwidth consumption and server crashes (exceeding the 1 MB chunk size limit when saving region-based worlds in PM3, or exceeding the 32 KiB TAG_String limit in PM4).

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-p62j-hrxm-xcxf	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/pocketmine-mp-before-3.26.5-input-validation-via-book-pages	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-400	Uncontrolled Resource Consumption	[email protected]

Affected Products

Product	Versions
PocketMine-MP	< 3.26.5 (semver) < 4.0.5 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 3.26.5moderate effort Upgrade: 4.0.5moderate effort Workaround:low effort Ban writable books, or use a plugin to cancel `PlayerEditBookEvent` if `strlen(text) > 1024 \|\| mb_strlen(text) > 256.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 14, 2026	CVE Modified	CISA-ADP
Sep 8, 2026	CVE Modified	[email protected]
Sep 7, 2026	New CVE Received	[email protected]