GHSA-7m9r-rq9j-wmmh

    Dashboard / Vulnerabilities / GHSA-7m9r-rq9j-wmmh

    GHSA-7m9r-rq9j-wmmh

    Published: 10 Jan 2023Last Modified: 10 Sept 2026

    Summary: PocketMine-MP vulnerable to denial-of-service by sending large modal form responses

    Details: ### Impact Due to a workaround for an old client bug (which has since been fixed), very large JSON payloads in `ModalFormResponsePacket` were able to cause the server to spend a significant amount of time processing the packet. Large numbers of these packets were able to hog CPU time so as to prevent the server from processing other connections in a timely manner. ### Patches The problem has been addressed in 3baa5ab71214f96e6e7ab12cb9beef08118473b5 by removing the workaround code. ### Workarounds Plugins could cancel `DataPacketReceiveEvent` for this packet, decode the data their way, and then call `Player->onFormSubmit()` directly, bypassing the vulnerable code.

    References: https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-7m9r-rq9j-wmmh, https://github.com/pmmp/PocketMine-MP

    Affected packages

    Package

    Name: pocketmine/pocketmine-mp

    Purl: pkg:composer/pocketmine/pocketmine-mp

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.12.5

    Affected versions

    3.0.0
    3.0.1
    3.0.10
    3.0.11
    3.0.12
    3.0.2
    3.0.3
    3.0.4
    3.0.5
    3.0.6
    3.0.7
    3.0.8
    3.0.9

    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
    GHSA-7m9r-rq9j-wmmh | CVE-DB