What is CVE-2026-56353?

CVE-2026-56353 is a medium-severity vulnerability in N8n, classified under Improper Authentication. CVSS score: 4.8/10. Published 2026-07-15.

How severe is CVE-2026-56353?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Auth bypass in N8n

CVE-2026-56353

n8n contains an authentication bypass in the Chat Trigger node when configured with n8n User Auth (a non-default configuration). In affected releases — before 1.123.22, the 2.0.0 through 2.9.2 line, and 2.10.0 — the authentication check on…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

N8n — versions 0, 1.123.22, 2.0.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56353?: CVE-2026-56353 is a medium-severity vulnerability in N8n, classified under Improper Authentication. CVSS score: 4.8/10. Published 2026-07-15.
How severe is CVE-2026-56353?: Medium severity. CVSS v3 base score is 4.8 out of 10.