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CVE-2026-56353— n8n - Authentication Bypass in Chat Trigger Node

Quick assessment

Affected
n8n n8n
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n存在授权问题漏洞，该漏洞源于Chat Trigger节点配置n8n User Auth时存在身份验证绕过，允许绕过Chat Trigger webhook端点的身份验证检查，导致无需有效凭据即可访问。以下版本受到影响：1.123.22之前版本、2.0.0至2.9.2版本和2.10.0版本。

CVSS 4.8 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
n8n n8n < 1.123.22 affected
1.123.22 unaffected
2.0.0< 2.9.3 affected
2.9.3 unaffected
2.10.0< 2.10.1 affected
2.10.1 unaffected
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I. Basic Information for CVE-2026-56353

Vulnerability Information
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Vulnerability Title
n8n - Authentication Bypass in Chat Trigger Node
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
n8n 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n存在授权问题漏洞，该漏洞源于Chat Trigger节点配置n8n User Auth时存在身份验证绕过，允许绕过Chat Trigger webhook端点的身份验证检查，导致无需有效凭据即可访问。以下版本受到影响：1.123.22之前版本、2.0.0至2.9.2版本和2.10.0版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n n8n 0 ~ 1.123.22 -

II. Public POCs for CVE-2026-56353

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
default-local-qwen3.6 · 11345 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-56353

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Vendor Advisories for CVE-2026-56353 (2)

Same Patch Batch · n8n · 2026-07-15 · 5 CVEs total

CVE-2026-56352 6.4 MEDIUM n8n - Arbitrary File Read and Execution via ExecuteWorkflow localFile Parameter
CVE-2026-59259 n8n - Permission Bypass via Expression Parser Mismatch in External Secrets
CVE-2026-59254 n8n - External Secrets Disclosure via Workflow Node Expressions
CVE-2026-56349 n8n - Guardrail Node Bypass via Crafted Input

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n
Same weakness: CWE-287

V. Comments for CVE-2026-56353

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