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CVE-2026-32112

Estado: AnalizadaMedia (4.7)—

ha-mcp is a Home Assistant MCP Server. Prior to 7.0.0, the ha-mcp OAuth consent form renders user-controlled parameters via Python f-strings with no HTML escaping. An attacker who can reach the OAuth endpoint and convince the server operator to follow a crafted authorization URL could execute JavaScript in the operator's browser. This affects only users running the beta OAuth mode (ha-mcp-oauth), which is not part of the standard setup and requires explicit configuration. This vulnerability is fixed in 7.0.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Homeassistant-ai — Home Assistant MCP Server

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-32112",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-32112",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-12T14:05:22.619817Z"
        }
      }
    ],
    "cvssMetricV31": [
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          "scope": "UNCHANGED",
          "version": "3.1",
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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      },
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          "confidentialityImpact": "LOW"
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          "product": "ha-mcp",
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              "version": "< 7.0.0"
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  "published": "2026-03-11T21:16:17.450",
  "references": [
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      "url": "https://github.com/homeassistant-ai/ha-mcp/security/advisories/GHSA-pf93-j98v-25pv",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ha-mcp is a Home Assistant MCP Server. Prior to 7.0.0, the ha-mcp OAuth consent form renders user-controlled parameters via Python f-strings with no HTML escaping. An attacker who can reach the OAuth endpoint and convince the server operator to follow a crafted authorization URL could execute JavaScript in the operator's browser. This affects only users running the beta OAuth mode (ha-mcp-oauth), which is not part of the standard setup and requires explicit configuration. This vulnerability is fixed in 7.0.0."
    },
    {
      "lang": "es",
      "value": "ha-mcp es un servidor MCP de Home Assistant. Antes de la versión 7.0.0, el formulario de consentimiento OAuth de ha-mcp renderiza parámetros controlados por el usuario a través de f-strings de Python sin escape HTML. Un atacante que pueda alcanzar el endpoint OAuth y convencer al operador del servidor de seguir una URL de autorización manipulada podría ejecutar JavaScript en el navegador del operador. Esto afecta solo a los usuarios que ejecutan el modo OAuth beta (ha-mcp-oauth), que no forma parte de la configuración estándar y requiere configuración explícita. Esta vulnerabilidad está corregida en la versión 7.0.0."
    }
  ],
  "lastModified": "2026-06-17T10:35:09.480",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "7.0.0"
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          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}