CVE-2026-48763

{
  "id": "CVE-2026-48763",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-11T21:17:36.810",
  "lastModified": "2026-10-23T20:10:00.160",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "TypeBot is a chatbot builder tool. Versions prior to 3.17.0 expose a deprecated public upload endpoint at `GET /api/v1/typebots/{typebotId}/blocks/{blockId}/storage/upload-url` that accepts an attacker-controlled `filePath` and returns a presigned S3 `PUT` URL for that exact key. Because the endpoint only checks that the referenced typebot is public and that the referenced block is a file input block, an unauthenticated attacker who knows a valid public `typebotId` and `blockId` can request presigned upload URLs for arbitrary objects in the shared bucket, including `private/...` and other tenants' `public/...` paths. Version 3.17.0 fixes this issue."
    },
    {
      "lang": "es",
      "value": "TypeBot es una herramienta de creación de chatbots. Las versiones anteriores a la 3.17.0 exponen un endpoint de carga público obsoleto en “GET /api/v1/typebots/{typebotId}/blocks/{blockId}/storage/upload-url” que acepta un “filePath” controlado por el atacante y devuelve una URL “PUT” de S3 pre-firmada para esa clave exacta. Debido a que el endpoint solo verifica que el typebot referenciado es público y que el bloque referenciado es un bloque de entrada de archivo, un atacante no autenticado que conoce un “typebotId” y un “blockId” públicos válidos puede solicitar URLs de carga pre-firmadas para objetos arbitrarios en el bucket compartido, incluyendo “private/...” y rutas “public/...” de otros inquilinos. La versión 3.17.0 corrige este problema."
    }
  ],
  "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:U/C:N/I:H/A:L",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-12T12:50:20.706540Z",
          "id": "CVE-2026-48763",
          "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-862"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/baptisteArno/typebot.io/commit/7ae4c007d0987d2ca907b47e1b7418db62b8a157",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/baptisteArno/typebot.io/pull/2459",
      "source": "[email protected]"
    },
    {
      "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-m7f5-3wcm-x2c4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}