Cross-site scripting in n8n - #VU137162
Published: July 8, 2026
Vulnerability identifier: #VU137162
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-79
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 execute arbitrary JavaScript in the victim's browser.
The vulnerability exists due to improper input validation in the Resource Locator component when opening workflow-persisted external links. A remote user can create a crafted workflow with a malicious cachedResultUrl value to execute arbitrary JavaScript in the victim's browser.
User interaction is required to open the crafted workflow and interact with external links.
Remediation
Install security update from vendor's website.