CVE catalog

CVE-2023-5831

UBUNTU-

[CVE catalog]

An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.0 before 16.3.6, all versions starting from 16.4 before 16.4.2, and all versions starting from 16.5.0 before 16.5.1 which have the `super_sidebar_logged_out` feature flag enabled. Affected versions with this default-disabled feature flag enabled may unintentionally disclose GitLab version metadata to unauthorized actors.

Severity
Unknown
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.46% · Oct 27, 2026

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / releasePackageVersionStatusSource
Ubuntu16.04gitlab8.4.3+dfsg-12Affected[UBUNTU-CVE-2023-5831]
Ubuntu16.04gitlab8.4.3+dfsg-9Affected[UBUNTU-CVE-2023-5831]
Ubuntu16.04gitlab8.5.8+dfsg-5Affected[UBUNTU-CVE-2023-5831]
Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
Ubuntu16.04gitlab8.4.3+dfsg-12Affected[UBUNTU-CVE-2023-5831]
Ubuntu16.04gitlab8.4.3+dfsg-9Affected[UBUNTU-CVE-2023-5831]
Ubuntu16.04gitlab8.5.8+dfsg-5Affected[UBUNTU-CVE-2023-5831]
Original provider fields
{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "gitlab",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "8.4.3+dfsg-9",
        "8.4.3+dfsg-12",
        "8.5.8+dfsg-5"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-5831",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2023-5831",
      "provider_updated_at": "2025-10-24T05:01:37Z"
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

Observed:

References

[FIRST EPSS] · [OSV Package Vulnerability Database]