What is CVE-2026-103257?

CVE-2026-103257 is a high-severity vulnerability in N8n-Io N8n, classified under Path Traversal. CVSS score: 7.7/10. Published 2026-10-01.

How severe is CVE-2026-103257?

High severity. CVSS v3 base score is 7.7 out of 10.

Path Traversal in N8n-Io N8n

CVE-2026-103257

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a path traversal vulnerability in the n8n node that fails to validate resource identifiers. Attackers can craft malicious resource IDs to redirect API calls to unintended resources, allowing unauthorized access to workflows, executions, and credential secrets within the API key's scope.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-10-01 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

N8n-Io N8n

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/n8n-io/n8n/security/advisories/GHSA-89p4-6h98-c7xm (vendor-advisory)
www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-path-travers… (third-party-advisory)

Frequently asked questions

What is CVE-2026-103257?: CVE-2026-103257 is a high-severity vulnerability in N8n-Io N8n, classified under Path Traversal. CVSS score: 7.7/10. Published 2026-10-01.
How severe is CVE-2026-103257?: High severity. CVSS v3 base score is 7.7 out of 10.