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    CVE-2023-42818

    JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.

    Published:Sep 27, 2023
    Last Modified:Mar 25, 2025
    EPS:Sep 27, 2023
    EPSS Score:0.00156
    CVSS Score:5.4

    Affected Products

    Vendor
    Fit2cloud
    Product
    Jumpserver
    Vendor
    Jumpserver
    Product
    Jumpserver

    Exploits

    https://github.com/jumpserver/jumpserver/security/advisories/GHSA-jv3c-27cv-w8jvhttps://github.com/jumpserver/jumpserver/security/advisories/GHSA-jv3c-27cv-w8jv

    Related CVEs

    CVE-2026-31864 (CVSS 6.8) — JumpServer is an open source bastion host and an operation and maintenance security audit system. a Server-Sid…
    CVE-2026-31798 (CVSS 5) — JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v4.…
    CVE-2025-58044 (CVSS 5.5) — JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v3.…
    CVE-2025-62795 (CVSS 7.1) — JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v3.…
    CVE-2025-62712 (CVSS 9.6) — JumpServer is an open source bastion host and an operation and maintenance security audit system. In JumpServe…
    CVE-2025-27095 (CVSS 4.3) — JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.8…
    CVE-2024-40628 (CVSS 10) — JumpServer is an open-source Privileged Access Management (PAM) tool that provides DevOps and IT teams with on…
    CVE-2024-40629 (CVSS 10) — JumpServer is an open-source Privileged Access Management (PAM) tool that provides DevOps and IT teams with on…
    CVE-2024-29202 (CVSS 9.9) — JumpServer is an open source bastion host and an operation and maintenance security audit system. Attackers ca…
    CVE-2024-29201 (CVSS 9.9) — JumpServer is an open source bastion host and an operation and maintenance security audit system. Attackers ca…

    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