Protection Mechanism Failure in n8n - CVE-2026-27495
Published: March 13, 2026
Vulnerability identifier: #VU124007
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-27495
CWE-ID: CWE-693
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 bypass implemented security restrictions.
The vulnerability exists due to insufficient implementation of security measures. A remote user with permission to create or modify workflows can bypass the JavaScript Task Runner sandbox and execute arbitrary code outside the sandbox boundary.
How to mitigate CVE-2026-27495
Install updates from vendor's website.