CVE-2026-54353

Gravedad CVSS v3.1:

ALTA

Tipo:

No Disponible / Otro tipo

Fecha de publicación:

26/06/2026

Última modificación:

30/06/2026

Descripción

*** Pendiente de traducción *** Budibase is an open-source low-code platform. Prior to 3.39.9, authenticated users with automation permissions can bypass Budibase&#39;s SSRF blacklist through DNS rebinding. The outbound fetch flow validates a hostname against the blacklist before the request is sent, but the actual socket connection later performs a separate DNS lookup through node-fetch. Since the validated IPs are never pinned to the connection, an attacker-controlled hostname can return a public IP during validation and a private/internal IP during the real connection. This results in a non-blind SSRF primitive against internal services reachable from the Budibase host, including loopback, RFC1918 ranges, and cloud metadata endpoints. This vulnerability is fixed in 3.39.9.

Impacto

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N CVSS v3.1 Severidad y Métricas:

Puntuación base: 8.50 ALTA
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Vector de acceso (AV): A través de red
Complejidad de acceso (AC): Bajo
Privilegios Requeridos (PR): Bajo
Interacción del usuario (UI): Ninguno
Alcance (S): Modificado
Impacto a la confidencialidad (C): Alto
Impacto a la integridad (I): Bajo
Impacto a la disponibilidad (A): Ninguno