Path Traversal in N8n-Io N8n
CVE-2026-103254
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 signed resume URL generation for Send-and-Wait approvals. Attackers with workflow creation permissions can mint valid approval URLs for gates in projects they cannot access by exploiting unresolved traversal sequences in caller-controlled node IDs, enabling cross-project approval forgery.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N.
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
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-597w-c3jh-g8fg (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-2026-103254?
- CVE-2026-103254 is a medium-severity vulnerability in N8n-Io N8n, classified under Path Traversal. CVSS score: 6.3/10. Published 2026-10-01.
- How severe is CVE-2026-103254?
- Medium severity. CVSS v3 base score is 6.3 out of 10.