Server-Side Request Forgery (SSRF) in n8n - #VU137163
Published: July 8, 2026
Vulnerability identifier: #VU137163
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: n8n
Affected software:
n8n
n8n
Detailed vulnerability description
The vulnerability allows a remote user to access internal network resources via server-side request forgery.
The vulnerability exists due to improper access control in /rest/dynamic-node-parameters/ endpoints when handling requests with an absolute URL in the routing configuration. A remote user can send a specially crafted request to access internal network resources via server-side request forgery.
Workflow creation or execution is not required. The issue is exposed when SSRF protection is disabled by default.
Remediation
Install security update from vendor's website.