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High

Insertion of Sensitive Information Into Sent Data in GitLab

Type: advisorySources: Official CVE List

An issue has been discovered in GitLab EE affecting all versions starting from 11.6 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. It was possible for an unauthorised project or group member to read the CI/CD variables using the custom project templates.

Products
GitLab
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2023-3399
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 05:27 UTC · Revision 1

Source evidence

Insertion of Sensitive Information Into Sent Data in GitLab

core-cve · Original source

Published 6 Nov 2023, 12:08 UTC

An issue has been discovered in GitLab EE affecting all versions starting from 11.6 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. It was possible for an unauthorised project or group member to read the CI/CD variables using the custom project templates.

cve:CVE-2023-3399

GitLab

Fixed versions: Not specified

Complete source record
{
  "id": "9186e1a6aa77b0935116c56ddc536ead29814c81b339425bab9b44311abc238c",
  "url": "https://www.cve.org/CVERecord?id=CVE-2023-3399",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Insertion of Sensitive Information Into Sent Data in GitLab",
    "summary": "An issue has been discovered in GitLab EE affecting all versions starting from 11.6 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. It was possible for an unauthorised project or group member to read the CI/CD variables using the custom project templates.",
    "evidence": "cve:CVE-2023-3399",
    "products": [
      {
        "name": {
          "value": "GitLab",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-3399",
      "aliases": [
        "CVE-2023-3399"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "CHANGED",
            "version": "3.1",
            "baseScore": 8.5,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
            "integrityImpact": "LOW",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "NONE",
            "privilegesRequired": "LOW",
            "confidentialityImpact": "HIGH"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
          ],
          "repo": "git://git@gitlab.com:gitlab-org/gitlab.git",
          "vendor": "GitLab",
          "product": "GitLab",
          "versions": [
            {
              "status": "affected",
              "version": "11.6",
              "lessThan": "16.3.6",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "16.4",
              "lessThan": "16.4.2",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "16.5",
              "lessThan": "16.5.1",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-28T11:39:49.684Z",
      "provider": "cve",
      "references": [
        "https://gitlab.com/gitlab-org/gitlab/-/issues/416244",
        "https://hackerone.com/reports/2021616"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2023-3399",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2024-07-24T13:40:19.625133Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2024-09-17T16:02:07.786Z"
            }
          },
          {
            "title": "CVE Program Container",
            "references": [
              {
                "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/416244",
                "name": "GitLab Issue #416244",
                "tags": [
                  "issue-tracking",
                  "x_transferred"
                ]
              },
              {
                "url": "https://hackerone.com/reports/2021616",
                "name": "HackerOne Bug Bounty Report #2021616",
                "tags": [
                  "technical-description",
                  "exploit",
                  "x_transferred"
                ]
              }
            ],
            "providerMetadata": {
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE",
              "dateUpdated": "2024-08-02T06:55:03.360Z"
            }
          }
        ],
        "cna": {
          "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
          "shortName": "GitLab",
          "dateUpdated": "2026-10-28T11:39:49.684Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-3399",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 432225,
  "published_at": "2023-11-06T12:08:54.97+00:00"
}