CVE-2023-42820

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    CVE-2023-42820

    Published: 26 Sept 2023Last Modified: 12 Aug 2026

    Summary: Random seed leakage in Jumpserver

    Details: JumpServer is an open source bastion host. This vulnerability is due to exposing the random number seed to the API, potentially allowing the randomly generated verification codes to be replayed, which could lead to password resets. If MFA is enabled users are not affect. Users not using local authentication are also not affected. Users are advised to upgrade to either version 2.28.19 or to 3.6.5. There are no known workarounds or this issue.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/42xxx/CVE-2023-42820.json, https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7prv-g565-82qp, https://nvd.nist.gov/vuln/detail/CVE-2023-42820, https://github.com/jumpserver/jumpserver/commit/42337f0d00b2a8d45ef063eb5b7deeef81597da5

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- f52a0ce96030c048b313803c54df11a17aa58999
    Fixed -22df4cba86cfe58cba94408a14b08a3292a07f5c

    Affected versions

    v2.27.0

    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-2023-42820 | CVE-DB