Incorrect authorization in n8n - #VU150759
Published: September 17, 2026
Vulnerability identifier: #VU150759
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose credentials.
The vulnerability exists due to improper authorization in the workflow credential tamper guard when saving a shared workflow containing nodes with duplicate IDs. A remote attacker can create nodes sharing an ID to disclose credentials.
Exploitation requires a workflow shared with an editor.
Affected software
n8n
Remediation
Install security update from vendor's website.
n8n - update to 1.123.80