CVE-2026-56353

EUVD-2026-44626
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
n8nn8n
𝑥
< 1.123.22
CNA
n8nn8n
2.0.0 ≤
𝑥
< 2.9.3
CNA
n8nn8n
2.10.0 ≤
𝑥
< 2.10.1
CNA
Common Weakness Enumeration
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