CVE-2026-56353

n8n - Authentication Bypass in Chat Trigger Node

Medium6.3EPSS 0.33%

Published: 15 Jul 2026
Updated: 16 Jul 2026
Reserved: 20 Jun 2026
Assigned by: VulnCheck

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 scores of CVE-2026-56353, by who scored it
Scored by	CVSS	Score	Vector
VulnCheckCNA (assigner)	4.0	Medium6.3	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
VulnCheckCNA (assigner)	3.1	Medium4.8	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
NVDNVD · Analyzed	4.0	Medium6.3	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

EPSS (exploitation in 30 days): 0.33% · top 74% of all CVEs (6 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.

Weakness

CWE-287: Improper Authentication (opens in a new tab)All about CWE-287 and its CVEs

Affected products

n8n · n8n
- affected < 1.123.22
- unaffected 1.123.22
- affected 2.0.0 – < 2.9.3
- unaffected 2.9.3
- affected 2.10.0 – < 2.10.1
- unaffected 2.10.1

References (2)

GitHub Security Advisory (GHSA-jh8h-6c9q-7gmw) (opens in a new tab)vendor-advisory
VulnCheck Advisory: n8n - Authentication Bypass in Chat Trigger Node (opens in a new tab)third-party-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated 16 Jul 2026, 15:14 UTC.