Authentication Bypass by Spoofing in n8n - #VU127202
Published: April 23, 2026
Vulnerability identifier: #VU127202
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-290
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to inject arbitrary data into a workflow.
The vulnerability exists due to authentication bypass by spoofing in the ZendeskTrigger node when handling webhook POST requests. A remote attacker can send unsigned POST requests to inject arbitrary data into a workflow.
Exploitation requires knowledge of the webhook URL for a workflow using the ZendeskTrigger node.
Affected software
n8n
Remediation
Install security update from vendor's website.
n8n - addressed in versions 1.123.18, 2.6.2