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 n8n host system. This can be exploited to obtain critical configuration data and user credentials, leading to complete account takeover of any user on the instance. This issue has been patched in versions 1.123.18 and 2.5.0.

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

EPSS: 0.003 (22.9th 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.