FKIE_CVE-2026-33712

Vulnerability from fkie_nvd - Published: 2026-05-22 17:16 - Updated: 2026-07-23 16:10
Severity
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Summary
Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST /api/v1/typebots/{typebotId}/preview/startChat) allows unauthenticated users to achieve Server-Side Request Forgery (SSRF) by supplying a custom typebot definition with server-side code blocks. The fetch function exposed inside the isolated-vm sandbox calls Node.js native fetch without the SSRF validation (validateHttpReqUrl) that protects the HTTP Request block. This bypasses all SSRF mitigations added after GHSA-8gq9-rw7v-3jpr. Exploitation of this unauthenticated SSRF vulnerability can lead to cloud credential theft, internal network access and data exfiltration for any self-hosted Typebot deployments and hosted services. This issue has been fixed in version 3.16.0.
References
security-advisories@github.comhttps://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0
security-advisories@github.comhttps://github.com/baptisteArno/typebot.io/security/advisories/GHSA-vc2q-r6rq-ggj9
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-vc2q-r6rq-ggj9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "typebot.io",
          "vendor": "baptisteArno",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.16.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST /api/v1/typebots/{typebotId}/preview/startChat) allows unauthenticated users to achieve Server-Side Request Forgery (SSRF) by supplying a custom typebot definition with server-side code blocks. The fetch function exposed inside the isolated-vm sandbox calls Node.js native fetch without the SSRF validation (validateHttpReqUrl) that protects the HTTP Request block. This bypasses all SSRF mitigations added after GHSA-8gq9-rw7v-3jpr. Exploitation of this unauthenticated SSRF vulnerability can lead to cloud credential theft, internal network access and data exfiltration for any self-hosted Typebot deployments and hosted services. This issue has been fixed in version 3.16.0."
    },
    {
      "lang": "es",
      "value": "Typebot es una herramienta de creaci\u00f3n de chatbots. En las versiones 3.15.2 y anteriores, el endpoint de previsualizaci\u00f3n de chat (POST /api/v1/typebots/{typebotId}/preview/startChat) permite a usuarios no autenticados lograr Falsificaci\u00f3n de Petici\u00f3n del Lado del Servidor (SSRF) al proporcionar una definici\u00f3n de typebot personalizada con bloques de c\u00f3digo del lado del servidor. La funci\u00f3n fetch expuesta dentro del sandbox isolated-vm llama a la funci\u00f3n fetch nativa de Node.js sin la validaci\u00f3n de SSRF (validateHttpReqUrl) que protege el bloque de Petici\u00f3n HTTP. Esto elude todas las mitigaciones de SSRF a\u00f1adidas despu\u00e9s de GHSA-8gq9-rw7v-3jpr. La explotaci\u00f3n de esta vulnerabilidad de SSRF no autenticada puede conducir al robo de credenciales en la nube, acceso a la red interna y exfiltraci\u00f3n de datos para cualquier despliegue de Typebot autoalojado y servicios alojados. Este problema ha sido solucionado en la versi\u00f3n 3.16.0."
    }
  ],
  "id": "CVE-2026-33712",
  "lastModified": "2026-07-23T16:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33712",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-22T17:18:33.583327Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-22T17:16:46.533",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-vc2q-r6rq-ggj9"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-vc2q-r6rq-ggj9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        },
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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