CVE-2026-56353 n8n - Authentication Bypass in Chat Trigger Node

Medium 6.3 Published 15 Jul 2026 Updated 16 Jul 2026

Attackers can bypass authentication on the Chat Trigger node in n8n when using User Auth, gaining unauthorized access to the webhook endpoint.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-56353?

CVE-2026-56353 is a medium-severity authentication bypass vulnerability in N8n N8n, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-287

Which versions are affected by CVE-2026-56353?

6 open source packages ship an affected version, including n8n. It affects 1 product.

Package	Affected	Fixed in
`n8n` npm	All versions	`1.123.22`
`n8n` npm	All versions	`1.123.22`
`n8n` npm	From `2.0.0`	`2.9.3`
`n8n` npm	From `2.0.0`	`2.9.3`
`n8n` npm	From `2.10.0`	`2.10.1`
`n8n` npm	From `2.10.0`	`2.10.1`

Products include N8n N8n.

How do I fix CVE-2026-56353?

Upgrade n8n to a fixed version for your release line: 1.123.22, 2.9.3 or 2.10.1.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-56353 being exploited?

There is no known exploitation of CVE-2026-56353 in the wild and no public exploit code.

All N8n N8n vulnerabilities

Sources

Also known as GHSA-455f-pg36-wx7g, GHSA-jh8h-6c9q-7gmw.