CVE-2026-15583

Full vulnerability record from the local CVENow database.

Description

A confused-deputy flaw in Grafana MCP Server allows an unauthenticated remote attacker to exfiltrate the server's environment-configured Grafana service-account token by supplying a crafted X-Grafana-URL request header. This also enables SSRF against arbitrary internal services, including cloud metadata endpoints.

Severity

HIGH

CVSS score

8.6 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-07-15 08:16:22.977000

Last modified

2026-10-24 22:10:00.210000

View original CVE JSON

{
  "id": "CVE-2026-15583",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-15T08:16:22.977",
  "lastModified": "2026-10-24T22:10:00.210",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A confused-deputy flaw in Grafana MCP Server allows an unauthenticated remote attacker to exfiltrate the server's environment-configured Grafana service-account token by supplying a crafted X-Grafana-URL request header. This also enables SSRF against arbitrary internal services, including cloud metadata endpoints."
    },
    {
      "lang": "es",
      "value": "Una falla de delegado confuso en el servidor Grafana MCP permite a un atacante remoto no autenticado exfiltrar el token de cuenta de servicio de Grafana configurado en el entorno del servidor al proporcionar una cabecera de solicitud X-Grafana-URL manipulada. Esto también permite SSRF contra servicios internos arbitrarios, incluidos los puntos finales de metadatos en la nube."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Grafana",
          "product": "Grafana MCP Server",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0.0.0",
              "lessThanOrEqual": "0.17.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-15T14:45:45.760884Z",
          "id": "CVE-2026-15583",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-610"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://grafana.com/security/security-advisories/cve-2026-15583",
      "source": "[email protected]"
    }
  ]
}