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CVE-2026-25051

Estado: AnalizadaAlta (8.5)—

n8n is an open source workflow automation platform. Prior to version 1.123.2, a Cross-Site Scripting (XSS) vulnerability has been identified in the handling of webhook responses and related HTTP endpoints. Under certain conditions, the Content Security Policy (CSP) sandbox protection intended to isolate HTML responses may not be applied correctly. An authenticated user with permission to create or modify workflows could abuse this to execute malicious scripts with same-origin privileges when other users interact with the crafted workflow. This could lead to session hijacking and account takeover. This issue has been patched in version 1.123.2.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

XSS en respuestas webhook de n8n (CWE-79) con ejecución de scripts maliciosos en navegador (T1059.007) y potencial secuestro de sesión (T1078) tras interacción del usuario.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

User TrainingRestrict Web-Based ContentApplication Developer GuidanceActive Directory ConfigurationUser Account ManagementPrivileged Account Management

Tecnologías afectadas (1)

N8N — N8N

CWE

Referencias

JSON original (NVD)

Mostrar
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  "published": "2026-02-04T17:16:22.980",
  "references": [
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      "url": "https://github.com/n8n-io/n8n/commit/ced34c0f93ab4c759a56065965986094d8ef7323",
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  "vulnStatus": "Analyzed",
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      "lang": "en",
      "value": "n8n is an open source workflow automation platform. Prior to version 1.123.2, a Cross-Site Scripting (XSS) vulnerability has been identified in the handling of webhook responses and related HTTP endpoints. Under certain conditions, the Content Security Policy (CSP) sandbox protection intended to isolate HTML responses may not be applied correctly. An authenticated user with permission to create or modify workflows could abuse this to execute malicious scripts with same-origin privileges when other users interact with the crafted workflow. This could lead to session hijacking and account takeover. This issue has been patched in version 1.123.2."
    },
    {
      "lang": "es",
      "value": "n8n es una plataforma de automatización de flujos de trabajo de código abierto. Antes de la versión 1.123.2, se ha identificado una vulnerabilidad de cross-site scripting (XSS) en el manejo de respuestas de webhook y puntos finales HTTP relacionados. Bajo ciertas condiciones, la protección sandbox de la Política de Seguridad de Contenido (CSP) destinada a aislar respuestas HTML puede no aplicarse correctamente. Un usuario autenticado con permiso para crear o modificar flujos de trabajo podría abusar de esto para ejecutar scripts maliciosos con privilegios de mismo origen cuando otros usuarios interactúan con el flujo de trabajo manipulado. Esto podría llevar a secuestro de sesión y toma de control de cuenta. Este problema ha sido parcheado en la versión 1.123.2."
    }
  ],
  "lastModified": "2026-06-17T10:24:02.760",
  "configurations": [
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