Vulnerabilidad · Publicado 28/08/2026
Budibase backend-core omite el rango 100.64.0.0/10 de su lista negra predeterminada de SSRF, permitiendo que usuarios autenticados con permisos de Builder ejecuten consultas REST datasource contra redes internas. Este rango es alta en infraestructuras cloud compartidas (AWS, Google Cloud) donde se asignan direcciones privadas. La vulnerabilidad afecta principalmente a deployments autohospedados sin configuración personalizada de listas negras.
Budibase backend-core (@budibase/backend-core, as used by @budibase/server) omits the shared address space range 100.64.0.0/10 from its default SSRF blacklist (DEFAULT_BLACKLIST) used by REST datasource query previews. When the default blacklist is active (i.e., a self-hosted deployment has not defined BLACKLIST_IPS), an authenticated user with the Builder permission can submit a REST datasource query preview request to POST /api/queries/preview targeting a reachable HTTP(S) service in the 100.64.0.0/10 range, causing the server to send a request to that target and return its response through the preview flow. Per the advisory, no released fix was identified at the time of publication; remediation is to add 100.64.0.0/10 to DEFAULT_BLACKLIST.
Score: 7.1/10 — Severidad: HIGH — Estado NIST: Received
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CWE-918
Publicado en NIST NVD.