| Component | n8n |
| Severity | medium (CVSS 6.3) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N |
| Published (NVD) | 2026-10-01 |
| Last modified | 2026-10-06 |
| Affected versions | < 1.123.80 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | 1.123.80 |
| Weakness | CWE-22 |
| CISA KEV | not listed |
NVD description
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.
What to do
- Upgrade n8n to
1.123.80or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-103254
- https://github.com/n8n-io/n8n/security/advisories/GHSA-597w-c3jh-g8fg
- https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-path-traversal-via-resume-url-generation
Read more
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