Improper access control in n8n - CVE-2026-33722
Published: April 23, 2026
Vulnerability identifier: #VU127213
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-33722
CWE-ID: CWE-284
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 disclose sensitive information.
The vulnerability exists due to improper access control in credential saving when referencing an external secret by name in a credential. A remote user can save a credential that references a target secret to disclose sensitive information.
The instance must have an external secrets vault configured, and the secret name must be known or guessable.
How to mitigate CVE-2026-33722
Install security update from vendor's website.