CVE-2026-123811

Full vulnerability record from the local CVENow database.

Description

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.

Severity

HIGH

CVSS score

7.5 (v3.1)

Vulnerability status

Received

Source identifier

[email protected]

Published

2026-11-09 22:18:37.287000

Last modified

2026-11-09 22:18:37.287000

View original CVE JSON

{
  "id": "CVE-2026-123811",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-09T22:18:37.287",
  "lastModified": "2026-11-09T22:18:37.287",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "dynatrace-oss",
          "product": "dynatrace-mcp",
          "versions": [
            {
              "version": "< 2.0.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.3
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/commit/8f12972481e9165e8bd24d63b0a9e71976f85a43",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/commit/ac5251edfcf9511c6c662414da743383e7d1451c",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/commit/ead820322238633f5b289778c57faf5d3a8d73f9",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/releases/tag/v2.0.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/dynatrace-oss/dynatrace-mcp/security/advisories/GHSA-p7w7-4929-vpj5",
      "source": "[email protected]"
    }
  ]
}