CVE-2026-86199

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    CVE-2026-86199

    Published: 9 Sept 2026Last Modified: 11 Sept 2026

    Summary: PocketMine-MP before 5.43.1 Denial of Service via unauthenticated login

    Details: PocketMine-MP versions before 5.43.1 fail to properly validate the Certificate field during offline login authentication. Unauthenticated players can trigger an uninitialized property access error that crashes the server.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86199.json, https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g2fj-p69p-9chp, https://nvd.nist.gov/vuln/detail/CVE-2026-86199, https://www.vulncheck.com/advisories/pocketmine-mp-before-5.43.1-denial-of-service-via-unauthenticated-login, https://github.com/pmmp/PocketMine-MP/commit/8c75a1d739e8e190d3cc2338b25cebcc9c052b1b, https://github.com/pmmp/PocketMine-MP/commit/e4aaef4ee0f769b52dc0347a1d6da403b9691115

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -763354dfadf13e4df00b8485c93da0c9dc2965a0

    Affected versions

    5.43.0

    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-2026-86199 | CVE-DB