CVE-2021-39889

    Dashboard / Vulnerabilities / CVE-2021-39889

    CVE-2021-39889

    Published: 5 Oct 2021Last Modified: 27 Aug 2026

    Summary:

    Details: In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.

    References: https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39889.json, https://gitlab.com/gitlab-org/gitlab/-/issues/338062, https://hackerone.com/reports/1294017

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e4567ef4362f4ef24a09112564b31dfe9044ea12
    Fixed -9cd657e5179e339171d27e4573b8f5711db1d824

    Affected versions

    v14.1.6-ee
    v14.1.5-ee
    v14.1.3-ee
    v14.1.1-ee
    v14.1.0-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-2021-39889 | CVE-DB