FKIE_CVE-2026-32111

Vulnerability from fkie_nvd - Published: 2026-03-11 21:16 - Updated: 2026-03-17 15:37
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
ha-mcp is a Home Assistant MCP Server. Prior to 7.0.0, the ha-mcp OAuth consent form (beta feature) accepts a user-supplied ha_url and makes a server-side HTTP request to {ha_url}/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network reconnaissance via an error oracle. Two additional code paths in OAuth tool calls (REST and WebSocket) are affected by the same primitive. The primary deployment method (private URL with pre-configured HOMEASSISTANT_TOKEN) is not affected. This vulnerability is fixed in 7.0.0.
References
security-advisories@github.comhttps://github.com/homeassistant-ai/ha-mcp/security/advisories/GHSA-fmfg-9g7c-3vq7Vendor Advisory
Impacted products
Vendor Product Version
homeassistant-ai home_assistant_mcp_server *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:homeassistant-ai:home_assistant_mcp_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "75A833D1-96EB-451C-876C-1267332C62DD",
              "versionEndExcluding": "7.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ha-mcp is a Home Assistant MCP Server. Prior to 7.0.0, the ha-mcp OAuth consent form (beta feature) accepts a user-supplied ha_url and makes a server-side HTTP request to {ha_url}/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network reconnaissance via an error oracle. Two additional code paths in OAuth tool calls (REST and WebSocket) are affected by the same primitive. The primary deployment method (private URL with pre-configured HOMEASSISTANT_TOKEN) is not affected. This vulnerability is fixed in 7.0.0."
    },
    {
      "lang": "es",
      "value": "ha-mcp es un servidor MCP de Home Assistant. Antes de la versi\u00f3n 7.0.0, el formulario de consentimiento OAuth de ha-mcp (caracter\u00edstica beta) acepta una ha_url proporcionada por el usuario y realiza una solicitud HTTP del lado del servidor a {ha_url}/api/config sin validaci\u00f3n de URL. Un atacante no autenticado puede enviar URLs arbitrarias para realizar reconocimiento de red interno a trav\u00e9s de un or\u00e1culo de errores. Dos rutas de c\u00f3digo adicionales en las llamadas a herramientas OAuth (REST y WebSocket) se ven afectadas por la misma primitiva. El m\u00e9todo de despliegue principal (URL privada con HOMEASSISTANT_TOKEN preconfigurado) no se ve afectado. Esta vulnerabilidad se corrige en la versi\u00f3n 7.0.0."
    }
  ],
  "id": "CVE-2026-32111",
  "lastModified": "2026-03-17T15:37:53.473",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-11T21:16:17.267",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/homeassistant-ai/ha-mcp/security/advisories/GHSA-fmfg-9g7c-3vq7"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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