{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "2.0.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "8f12972481e9165e8bd24d63b0a9e71976f85a43"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "ac5251edfcf9511c6c662414da743383e7d1451c"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "ead820322238633f5b289778c57faf5d3a8d73f9"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v2.0.0",
                "range": [
                  {
                    "fixed": "64dfcb1095823d0fb43013635446288a6ff60e29"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "64dfcb1095823d0fb43013635446288a6ff60e29"
            },
            {
              "fixed": "8f12972481e9165e8bd24d63b0a9e71976f85a43"
            },
            {
              "fixed": "ac5251edfcf9511c6c662414da743383e7d1451c"
            },
            {
              "fixed": "ead820322238633f5b289778c57faf5d3a8d73f9"
            }
          ],
          "repo": "https://github.com/dynatrace-oss/dynatrace-mcp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-p7w7-4929-vpj5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123811.json"
  },
  "details": "Dynatrace MCP Server is an MCP server for Dynatrace Observability. Prior to 2.0.0, a server started with the --http option accepts JSON-RPC tools/call requests without authentication, session validation, or Host and Origin protections before dispatching them under the server's configured Dynatrace credentials. A network-reachable caller can invoke execute_dql to read logs, security events, user sessions, and other Grail data, or invoke create_dynatrace_notebook to create tenant-visible notebooks. The send_event path is not affected because its requestHumanApproval gate blocks this attack path, and reset_grail_budget only demonstrates dispatch without accessing Dynatrace data. This issue is fixed in version 2.0.0.",
  "id": "CVE-2026-123811",
  "modified": "2026-11-11T02:30:23.215357950Z",
  "published": "2026-11-09T21:01:42.490Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/releases/tag/v2.0.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123811.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/security/advisories/GHSA-p7w7-4929-vpj5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123811"
    },
    {
      "type": "FIX",
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/commit/8f12972481e9165e8bd24d63b0a9e71976f85a43"
    },
    {
      "type": "FIX",
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/commit/ac5251edfcf9511c6c662414da743383e7d1451c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/commit/ead820322238633f5b289778c57faf5d3a8d73f9"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Dynatrace MCP Server: Unauthenticated HTTP MCP Tool Invocation in `@dynatrace-oss/dynatrace-mcp-server`"
}