{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "15.11"
              },
              {
                "fixed": "19.2.7"
              },
              {
                "introduced": "19.3"
              },
              {
                "fixed": "19.3.3"
              },
              {
                "introduced": "19.4"
              },
              {
                "fixed": "19.4.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "4dce6bc3728f63bc9086ff3088cda7527f6f0bec"
            },
            {
              "fixed": "9fcb5013c2e849eaec247e3aec56f23b51b6d7dd"
            },
            {
              "introduced": "8f83039bebbbb61d3b7b8b7e2342d1deec1e14c6"
            },
            {
              "fixed": "5760a902b6c8d001a0e0212aedee40bd69d28a2d"
            },
            {
              "introduced": "fa703f93afaf1133cd263f6aa0e91d284d7f1ebf"
            },
            {
              "fixed": "26212baacadb5beea6664f7ef025d753dccfb0d6"
            }
          ],
          "repo": "https://gitlab.com/gitlab-org/gitlab",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "GitLab",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4523.json"
  },
  "details": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an unauthenticated user to read CI/CD job trace contents containing sensitive variable values due to improper authorization enforcement in the GraphQL API.",
  "id": "CVE-2026-4523",
  "modified": "2026-10-01T03:30:27.825888500Z",
  "published": "2026-09-29T09:35:38.023Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/594294"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4523.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4523"
    },
    {
      "type": "REPORT",
      "url": "https://hackerone.com/reports/3590929"
    },
    {
      "type": "PACKAGE",
      "url": "https://gitlab.com/gitlab-org/gitlab"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Missing Authorization in GitLab"
}