CVE-2023-6680

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    CVE-2023-6680

    Published: 15 Dec 2023Last Modified: 11 Sept 2026

    Summary: Improper Certificate Validation in GitLab

    Details: An improper certificate validation issue in Smartcard authentication in GitLab EE affecting all versions from 11.6 prior to 16.4.4, 16.5 prior to 16.5.4, and 16.6 prior to 16.6.2 allows an attacker to authenticate as another user given their public key if they use Smartcard authentication. Smartcard authentication is an experimental feature and has to be manually enabled by an administrator.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6680.json, https://nvd.nist.gov/vuln/detail/CVE-2023-6680, https://gitlab.com/gitlab-org/gitlab/-/issues/421607, git://[email protected]:gitlab-org/gitlab.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 4c09765c6424a96be7c7ae7707db3bda4e9c4ab4
    Fixed -67af793e55bd098111d3c3e265cd2c92eb283f1c

    Affected versions

    v16.6.0-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-2023-6680 | CVE-DB