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

> CVE-2026-56353: n8n - Authentication Bypass in Chat Trigger Node. CVSS 4.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-56353
Last updated: 2026-10-24T22:10:00Z

- Published: 2026-07-15 11:25 UTC · Updated: 2026-10-24 22:10 UTC · Assigner: VulnCheck
- CVSS: 4.8 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- EPSS: 0.33%, 26th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-287

## 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.

## Affected vendors and products

- n8n: n8n

## Tracked companies

- [n8n](https://rewindex.com/company/n8n.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-56353)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-56353)
- [https://github.com/n8n-io/n8n/security/advisories/GHSA-jh8h-6c9q-7gmw](https://github.com/n8n-io/n8n/security/advisories/GHSA-jh8h-6c9q-7gmw)
- [https://www.vulncheck.com/advisories/n8n-authentication-bypass-in-chat-trigger-node](https://www.vulncheck.com/advisories/n8n-authentication-bypass-in-chat-trigger-node)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-56353 · Markdown: https://rewindex.com/cve/CVE-2026-56353.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-56353 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:12:34.251Z