CVE-2026-50132

Gravedad CVSS v3.1:

ALTA

Tipo:

CWE-284 Control de acceso incorrecto

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 3.39.0, `GET /api/chat-links/:instance/:token/handoff` is a public endpoint (no auth required) that performs a permanent, state-changing operation: it binds an external chat identity (Slack/Discord/MS Teams) to an authenticated Budibase user account, with no consent UI and no CSRF protection. The session token in the URL is created by the attacker (from their own /link slash command) and embeds the attacker&#39;s externalUserId. When an authenticated Budibase victim visits the URL, their account is silently and permanently linked to the attacker&#39;s Slack/Discord identity. The server responds with "Authentication succeeded." — no indication of what was linked. This vulnerability is fixed in 3.39.0.

Impacto

Vector 3.x

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

Puntuación base: 7.30 ALTA
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

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