CVE-2021-39881

    Dashboard / Vulnerabilities / CVE-2021-39881

    CVE-2021-39881

    Published: 5 Oct 2021Last Modified: 27 Aug 2026

    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://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json, https://gitlab.com/gitlab-org/gitlab/-/issues/26695, https://hackerone.com/reports/494530

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 64474662409a4759b9a905a905db23c2d609ce31
    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-2021-39881 | CVE-DB