UBUNTU-CVE-2021-39881

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    UBUNTU-CVE-2021-39881

    Published: 5 Oct 2021Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-39881

    Summary:

    Details: In all versions of GitLab CE/EE since version 7.7, the application may let a malicious user create an OAuth client application with arbitrary scope names which may allow the malicious user to trick unsuspecting users to authorize the malicious client application using the spoofed scope name and description.

    References: https://ubuntu.com/security/CVE-2021-39881, https://hackerone.com/reports/494530, https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json, https://gitlab.com/gitlab-org/gitlab/-/issues/26695, https://www.cve.org/CVERecord?id=CVE-2021-39881

    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-2021-39881 | CVE-DB