CVE-2026-48768

{
  "id": "CVE-2026-48768",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-18T00:16:23.887",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "TypeBot is a chatbot builder tool. In versions 3.16.1 and earlier, POST /api/blocks/file-input/v3/generate-upload-url is unauthenticated and uses unsanitized fileName input to construct public/ S3 object keys, while issuing presigned PUT URLs that do not bind Content-Type. As a result, any anonymous visitor to a published bot with a file input can upload attacker-controlled HTML, SVG, or JS to attacker-chosen subpaths, including other tenants’ publicly served result paths, enabling arbitrary content hosting and potential stored XSS on the storage origin. ../ traversal is blocked by S3/MinIO canonicalization (signature mismatch), but forward-slash path injection is exploitable. This issue has been fixed in version 3.17.0."
    },
    {
      "lang": "es",
      "value": "TypeBot es una herramienta de creación de chatbots. En las versiones 3.16.1 y anteriores, POST /API/blocks/file-input/v3/generate-upload-url no requiere autenticación y utiliza una entrada fileName no saneada para construir claves de objeto S3 en public/, mientras emite URLs PUT pre-firmadas que no vinculan Content-Type. Como resultado, cualquier visitante anónimo a un bot publicado con una entrada de archivo puede cargar HTML, SVG o JS controlados por el atacante a subrutas elegidas por el atacante, incluyendo las rutas de resultados servidas públicamente de otros inquilinos, lo que permite el alojamiento de contenido arbitrario y un potencial XSS almacenado en el origen de almacenamiento. La transversalidad .. /  es bloqueada por la canonización de S3/MinIO (desajuste de firma), pero la inyección de ruta con barra inclinada es explotable. Este problema ha sido solucionado en la versión 3.17.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "baptisteArno",
          "product": "typebot.io",
          "versions": [
            {
              "version": "< 3.17.0",
              "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:L/I:H/A:N",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-18T19:01:18.948671Z",
          "id": "CVE-2026-48768",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fp7x-6pqh-vhvf",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fp7x-6pqh-vhvf",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}