Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-31816

Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-74 Neutralización incorrecta de elementos especiales en la salida utilizada por un componente interno (Inyección)
Fecha de publicación:
09/03/2026
Última modificación:
09/03/2026

Descripción

*** Pendiente de traducción *** Budibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.31.4 and earlier, the Budibase server's authorized() middleware that protects every server-side API endpoint can be completely bypassed by appending a webhook path pattern to the query string of any request. The isWebhookEndpoint() function uses an unanchored regex that tests against ctx.request.url, which in Koa includes the full URL with query parameters. When the regex matches, the authorized() middleware immediately calls return next(), skipping all authentication, authorization, role checks, and CSRF protection. This means a completely unauthenticated, remote attacker can access any server-side API endpoint by simply appending ?/webhooks/trigger (or any webhook pattern variant) to the URL.

Referencias a soluciones, herramientas e información