What is CVE-2026-42226?

CVE-2026-42226 is a high-severity vulnerability in N8n, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-05-04.

How severe is CVE-2026-42226?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in N8n

CVE-2026-42226

n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An auth…

Vulnerability class: Broken Access Control

EPSS: 0.001 (17.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

N8n
N8n-io N8n — versions < 1.123.33, >= 2.17.0, < 2.17.5

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-r4v6-9fqc-w5jr (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42226?: CVE-2026-42226 is a high-severity vulnerability in N8n, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-05-04.
How severe is CVE-2026-42226?: High severity. CVSS v3 base score is 7.5 out of 10.