CVE-2022-51018

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    CVE-2022-51018

    Published: 7 Sept 2026Last Modified: 16 Sept 2026

    Summary: PocketMine-MP before 3.26.5 and 4.0.5 Input Validation via Book Pages

    Details: 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).

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/51xxx/CVE-2022-51018.json, https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-p62j-hrxm-xcxf, https://nvd.nist.gov/vuln/detail/CVE-2022-51018, https://www.vulncheck.com/advisories/pocketmine-mp-before-3.26.5-input-validation-via-book-pages

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 03510333dcec34fa5a59191e8e9610a9da5765ef
    Fixed -a4af1609eaf42eff5effe04b08f2c1402d408f3d

    Affected versions

    4.0.4
    4.0.3
    4.0.2
    4.0.1
    4.0.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-51018 | CVE-DB