{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.41.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b2398663654bfff3f7abc791bd12b26fbbb78929"
            }
          ],
          "repo": "https://github.com/nhost/nhost",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6c5x-3h35-vvw2"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-306",
      "CWE-942"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34200.json"
  },
  "details": "Nhost is an open source Firebase alternative with GraphQL. Prior to version 1.41.0, The Nhost CLI MCP server, when explicitly configured to listen on a network port, applies no inbound authentication and does not enforce strict CORS. This allows a malicious website visited on the same machine to issue cross-origin requests to the MCP server and invoke privileged tools using the developer's locally configured credentials. This vulnerability requires two explicit, non-default configuration steps to be exploitable. The default nhost mcp start configuration is not affected. This issue has been patched in version 1.41.0.",
  "id": "CVE-2026-34200",
  "modified": "2026-04-01T23:07:45.014343492Z",
  "published": "2026-03-31T13:57:42.003Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34200.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nhost/nhost/commit/15eae9285f9dce63e184b9bb24616474ffa5ccc9"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nhost/nhost/pull/4060"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nhost/nhost/security/advisories/GHSA-6c5x-3h35-vvw2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34200"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nhost CLI MCP Server: Missing Inbound Authentication on Explicitly Bound Network Port"
}