[CVE-2026-56348] n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-pa…

Descripción técnica

n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-parameters/options endpoint that allows authenticated users to bypass Allowed HTTP Request Domains restrictions. Attackers with credential access can cause the n8n server to issue HTTP requests with credentials to unauthorized hosts, exfiltrating sensitive authentication data.

Puntuación CVSS

Score: 9.1/10 — Severidad: CRITICAL — Estado NIST: Analyzed

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Productos afectados

N8n — N8n

Debilidades (CWE)

CWE-918

Fuente oficial

Publicado en NIST NVD.