CVE-2023-54355

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    CVE-2023-54355

    Published: 9 Sept 2026Last Modified: 12 Sept 2026

    Summary: PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve

    Details: PocketMine-MP versions before 5.3.1 and 4.23.1 fail to validate that the identityPublicKey in LoginPacket uses the required secp384r1 elliptic curve. Attackers can provide LoginPackets with keys using different curves or non-EC key types to pass login verification but trigger an uncaught exception during ECDH key derivation, crashing the server.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54355.json, https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-79rc-jjh6-rc89, https://nvd.nist.gov/vuln/detail/CVE-2023-54355, https://www.vulncheck.com/advisories/pocketmine-mp-5.2.0-server-crash-via-incorrect-ec-curve, https://github.com/pmmp/PocketMine-MP/commit/4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -250d18e41bb6fc671cbd2e3d2daaee2e06770b0f

    Affected versions

    5.3.0

    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-2023-54355 | CVE-DB