Vulnerability Report

CVE-2026-56353

Title: Authentication bypass in n8n Chat Trigger node

Authentication Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2026-56353.

CWE Category CWE-287

Published Date Jul 15, 2026

Modified Date Jul 16, 2026

Exploit Status Not Found

Score 6.3 CVSS v4.0

Exploit Probability (EPSS)

0.23%

Vulnerability Summary

CVE-2026-56353: 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.

Impacted Vendors

n8n 1

Reference Links

https://github.com/n8n-io/n8n/security/advisories/GHSA-jh8h-6c9q-7gmw https://www.vulncheck.com/advisories/n8n-authentication-bypass-in-chat-trigger-node

CVSS v4.0

Source Entity [email protected]

Severity MEDIUM

6.3

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW VECTOR

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1