CVE-2026-56348CWE-918

n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint

Medium · published June 22, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
40.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:L
EPSS
0.00482 · 40.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-06-22T21:04Z
EPSS history
Timeline
  • 22 JUN 21:04Z
    n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint
    cvelistv5