What is CVE-2026-54307?

CVE-2026-54307 is a critical-severity vulnerability in N8n, classified under Incorrect Authorization. CVSS score: 9.6/10. Published 2026-06-23.

How severe is CVE-2026-54307?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Auth bypass in N8n

CVE-2026-54307

n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, a member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credentia…

Vulnerability class: Broken Access Control

EPSS: 0.003 (23.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

N8n
N8n-io N8n — versions < 1.123.55, >= 2.0.0-rc.0, < 2.25.7, >= 2.26.0, < 2.26.2

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-54307?: CVE-2026-54307 is a critical-severity vulnerability in N8n, classified under Incorrect Authorization. CVSS score: 9.6/10. Published 2026-06-23.
How severe is CVE-2026-54307?: Critical severity. CVSS v3 base score is 9.6 out of 10.