Path traversal in n8n - #VU150766
Published: September 17, 2026
Vulnerability identifier: #VU150766
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to forge approval decisions across projects.
The vulnerability exists due to path traversal in signed resume URL generation when resolving caller-controlled node IDs. A remote user can save a workflow containing traversal sequences in a node ID to forge approval decisions across projects.
Generated approval URLs remain valid for future workflow executions.
Affected software
n8n
Remediation
Install security update from vendor's website.
n8n - addressed in versions 1.123.80, 2.39.6, 2.40.1