{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5ee1ecbf44525a8221d528743e0832912591b248"
            }
          ],
          "repo": "https://github.com/vantage6/vantage6",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m3mq-f375-5vgh"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-330"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/43xxx/CVE-2025-43866.json"
  },
  "details": "vantage6 is an open-source infrastructure for privacy preserving analysis. The JWT secret key in the vantage6 server is auto-generated unless defined by the user. The auto-generated key is a UUID1, which is not cryptographically secure as it is predictable to some extent. This vulnerability is fixed in 4.11.0.",
  "id": "CVE-2025-43866",
  "modified": "2025-12-04T02:34:21.498127262Z",
  "published": "2025-06-12T18:04:57.649Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/43xxx/CVE-2025-43866.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/vantage6/vantage6/security/advisories/GHSA-m3mq-f375-5vgh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43866"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Vantage6 Server JWT secret not cryptographically secure"
}