CVE-2021-39896

    Dashboard / Vulnerabilities / CVE-2021-39896

    CVE-2021-39896

    Published: 4 Oct 2021Last Modified: 27 Aug 2026

    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://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39896.json, https://gitlab.com/gitlab-org/gitlab/-/issues/339362

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- b50421f8650a390aa637da68c7e0138dd764fdf3
    Fixed -9cd657e5179e339171d27e4573b8f5711db1d824

    Affected versions

    v14.2.4-ee
    v14.2.3-ee
    v14.2.1-ee
    v14.2.0-ee

    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-2021-39896 | CVE-DB