What is CVE-2026-25052?

CVE-2026-25052 is a critical-severity vulnerability in N8n, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.9/10. Published 2026-02-04.

How severe is CVE-2026-25052?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in N8n

CVE-2026-25052

n8n is an open source workflow automation platform. Prior to versions 1.123.18 and 2.5.0, a vulnerability in the file access controls allows authenticated users with permission to create or modify workflows to read sensitive files from the…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.003 (22.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

N8n
N8n-io N8n — versions < 1.123.18, < 2.5.0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

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

Frequently asked questions

What is CVE-2026-25052?: CVE-2026-25052 is a critical-severity vulnerability in N8n, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.9/10. Published 2026-02-04.
How severe is CVE-2026-25052?: Critical severity. CVSS v3 base score is 9.9 out of 10.