CVE-2026-28445
CVE-2026-28445 · Typebot: Stored XSS via Rating Block Custom Icon Bypasses isUnsafe Sandbox in Builder Preview
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
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.
CVSS 8.7 · Alta · EPSS 0,3% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: node
Productos y versiones afectados
typebot.io
- Versiones
- < 3.16.0: Afectada
Sin corrección publicada
@typebot.io/js npm
- Intervalos de versiones afectados
- SEMVER: < 0.10.1
Actualiza a 0.10.1