Authentication bypass by spoofing in n8n - CVE-2026-21894
Published: February 9, 2026
Vulnerability identifier: #VU122487
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-21894
CWE-ID: CWE-290
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: n8n
Affected software:
n8n
n8n
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to missing authentication checks in Stripe Trigger node. A remote non-authenticated attacker can send a specially crafted HTTP POST request to the application and gain access to sensitive information or perform certain actions with the application.
How to mitigate CVE-2026-21894
Install updates from vendor's website.