UBUNTU-CVE-2021-39896

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-39896

    UBUNTU-CVE-2021-39896

    Published: 4 Oct 2021Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-39896

    Summary:

    Details: In all versions of GitLab CE/EE since version 8.0, when an admin uses the impersonate feature twice and stops impersonating, the admin may be logged in as the second user they impersonated, which may lead to repudiation issues.

    References: https://ubuntu.com/security/CVE-2021-39896, https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39896.json, https://gitlab.com/gitlab-org/gitlab/-/issues/339362, https://www.cve.org/CVERecord?id=CVE-2021-39896

    Affected packages

    Package

    Name: gitlab

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-5?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    8.4.3+dfsg-9
    8.4.3+dfsg-12

    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
    UBUNTU-CVE-2021-39896 | CVE-DB