CVE-2026-28445

{
  "id": "CVE-2026-28445",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-28445",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-22T17:51:54.519643Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.8,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "baptisteArno",
          "product": "typebot.io",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.16.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-05-22T17:16:46.127",
  "references": [
    {
      "url": "https://github.com/baptisteArno/typebot.io/commit/474ecbf46bc47a75265bada2599f12b2179de375",
      "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-6m7c-xfhp-p9fh",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-6m7c-xfhp-p9fh",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the RatingButton component in the embed package renders the user-controlled customIcon.svg field directly via Solid's innerHTML directive without any sanitization, even though DOMPurify is already a dependency and is used elsewhere in the codebase (e.g., StreamingBubble.tsx). Because rating blocks are not flagged as isUnsafe by the import sanitizer and the builder preview renders bots inline on the builder's own origin (builder.typebot.io) under a CSP permitting 'unsafe-inline', a malicious imported or collaborator-crafted typebot can execute arbitrary HTML/JS in the builder's authenticated context, bypassing the Web Worker sandbox that protects Script blocks during preview. This allows session hijacking and privilege escalation within the builder application. This issue has been fixed in version 3.16.0."
    },
    {
      "lang": "es",
      "value": "Typebot es una herramienta de creación de chatbots. En las versiones 3.15.2 y anteriores, el componente RatingButton en el paquete embed renderiza el campo customIcon.svg controlado por el usuario directamente a través de la directiva innerHTML de Solid sin ninguna sanitización, a pesar de que DOMPurify ya es una dependencia y se utiliza en otras partes de la base de código (por ejemplo, StreamingBubble.tsx). Debido a que los bloques de calificación no son marcados como isUnsafe por el sanitizador de importación y la vista previa del constructor renderiza los bots en línea en el propio origen del constructor (builder.typebot.io) bajo una CSP que permite 'unsafe-inline', un typebot malicioso importado o creado por un colaborador puede ejecutar HTML/JS arbitrario en el contexto autenticado del constructor, eludiendo la sandbox de Web Worker que protege los bloques de Script durante la vista previa. Esto permite el secuestro de sesión y la escalada de privilegios dentro de la aplicación del constructor. Este problema ha sido solucionado en la versión 3.16.0."
    }
  ],
  "lastModified": "2026-07-23T16:10:00.137",
  "sourceIdentifier": "security-advisories@github.com"
}