CVE-2026-117618

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    CVE-2026-117618

    Published: 28 Oct 2026Last Modified: 7 Nov 2026

    Summary:

    Details: In Jenkins 2.587 and earlier, LTS 2.580.1 and earlier, the HTTP endpoint for creating the first user account does not check whether the setup wizard has been completed, resulting in a race condition that allows unauthenticated attackers to create an administrator account while the initial user account is being replaced.

    References: https://www.jenkins.io/security/advisory/2026-10-28/#SECURITY-4122

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -ea3f958268fe87ed86a5d1c2d90c5a99426b97ce

    Affected versions

    jenkins-2.580.2-rc
    jenkins-2.580.1
    jenkins-2.580.1-rc
    jenkins-2.580

    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-2026-117618 | CVE-DB