CVE-2026-56353

n8n - Authentication Bypass in Chat Trigger Node

State: Published
Severity: 6.3 Medium
Published: Jul 15, 2026
Updated: Jul 16, 2026
Reserved: Jun 20, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	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	VulnCheck
3.1	4.8 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
n8nn8n	before 1.123.22Affected 1.123.22Not affected 2.0.0 to before 2.9.3Affected 2.9.3Not affected 2.10.0 to before 2.10.1Affected 2.10.1Not affected

References

GitHub Security Advisory (GHSA-jh8h-6c9q-7gmw)vendor-advisory
VulnCheck Advisory: n8n - Authentication Bypass in Chat Trigger Nodethird-party-advisory

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