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CVE-2022-51018— PocketMine-MP before 3.26.5 Input Validation via Book Pages

Quick assessment

Affected
pmmp PocketMine-MP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PocketMine-MP 在 3.26.5 之前以及 4.0.x 在 4.0.5 之前，未对书籍页面文本长度、页面数量以及作者/标题长度进行限制。获取到可编辑书籍的玩家可创建超大的 NBT 数据（即“书籍炸弹”），导致带宽消耗过高以及服务器崩溃（在 PM3 中保存基于 region 的世界时会超过 1 MB 的区块大小限制；在 PM4 中则超过 32 KiB 的 TAG_String 限制）。

CVSS 6.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
pmmp PocketMine-MP any unaffected
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I. Basic Information for CVE-2022-51018

Vulnerability Information
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Vulnerability Title
PocketMine-MP before 3.26.5 Input Validation via Book Pages
Source: CVE Program / CVE List V5
Vulnerability 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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
pmmp PocketMine-MP - -

II. Public POCs for CVE-2022-51018

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2022-51018

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Vendor Advisories for CVE-2022-51018 (2)

Same Patch Batch · pmmp · 2026-09-07 · 9 CVEs total

CVE-2022-51017 7.5 HIGH PocketMine-MP before 3.26.5 and 4.0.5 Denial of Service via Skin Data
CVE-2022-51013 6.5 MEDIUM PocketMine-MP before 4.2.3 Denial of Service via NBT Metadata
CVE-2022-51010 6.5 MEDIUM PocketMine-MP before 4.4.2 Server Crash via Item ID
CVE-2022-51014 6.5 MEDIUM PocketMine-MP before 4.0.7 Denial of Service via JSON Decoding
CVE-2022-51012 6.5 MEDIUM PocketMine-MP before 4.2.9 Denial of Service via NBT Deserialization
CVE-2022-51015 6.5 MEDIUM PocketMine-MP before 4.0.6 Denial of Service via PlayerActionPacket
CVE-2022-51016 6.1 MEDIUM PocketMine-MP before 4.0.0 Authentication Bypass via Login Replay
CVE-2022-51011 4.3 MEDIUM PocketMine-MP before 4.2.10 Denial of Service via Chat Messages

IV. Related Vulnerabilities

Same product: PocketMine-MP
Same vendor: pmmp
Same weakness: CWE-400

V. Comments for CVE-2022-51018

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