medium4.8
CVE-2026-56353
n8n contains an authentication bypass in the Chat Trigger node when configured with n8n User Auth (a non-default configuration).
Impact
n8n contains an authentication bypass in the Chat Trigger node when configured with n8n User Auth (a non-default configuration). In affected releases — before 1.123.22, the 2.0.0 through 2.9.2 line, and 2.10.0 — the authentication check on the Chat Trigger webhook endpoint can be circumvented, allowing access without valid credentials. Fixed in 1.123.22, 2.9.3, and 2.10.1.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| N8n | N8n | before 1.123.22 from 2.0.0 before 2.9.3 Version 2.10.0 |