CVE-2023-43650

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    CVE-2023-43650

    Published: 27 Sept 2023Last Modified: 12 Aug 2026

    Summary: Non-MFA account takeover via brute-force attack on weak password reset code in jumpserver

    Details: JumpServer is an open source bastion host. The verification code for resetting user's password is vulnerable to brute-force attacks due to the absence of rate limiting. JumpServer provides a feature allowing users to reset forgotten passwords. Affected users are sent a 6-digit verification code, ranging from 000000 to 999999, to facilitate the password reset. Although the code is only available in 1 minute, this window potentially allows for up to 1,000,000 validation attempts. This issue has been addressed in versions 2.28.20 and 3.7.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43650.json, https://github.com/jumpserver/jumpserver/security/advisories/GHSA-mwx4-8fwc-2xvw, https://nvd.nist.gov/vuln/detail/CVE-2023-43650, https://www.sonarsource.com/blog/diving-into-jumpserver-attackers-gateway-to-internal-networks-1-2

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 92fc0ceb1632b55e62a10a6aa8fcc6ecc7153cb0
    Fixed -c28cca7ca20025d4793a7db9295280ca56841399

    Affected versions

    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-2023-43650 | CVE-DB