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CVE-2026-72768— n8n before 2.32.1 SSRF Protection Bypass via MCP Client

Quick assessment

Affected
n8n-io n8n
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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公司开源的一款支持持续集成与交付的工作流自动化工具。 n8n 2.32.1之前版本存在服务端请求伪造漏洞，该漏洞源于MCP Client节点存在服务端请求伪造保护绕过漏洞，可能允许已认证用户绕过SSRF保护，通过制作工作流向内部或受限主机发送请求，从而暴露内部服务并读取响应。

CVSS 6.4 · Medium EPSS 0.40% · P31

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
n8n-io n8n < 2.32.1 affected
2.32.1 unaffected
< 2.31.5 affected
2.31.5 unaffected
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I. Basic Information for CVE-2026-72768

Vulnerability Information
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Vulnerability Title
n8n before 2.32.1 SSRF Protection Bypass via MCP Client
Source: CVE Program / CVE List V5
Vulnerability Description
n8n versions before 2.32.1 contain a server-side request forgery protection bypass vulnerability in the MCP Client node that allows authenticated users to bypass SSRF protections. Attackers can craft workflows that send requests to internal or blocked hosts without routing through SSRF protection, exposing internal services and reading responses back through the workflow.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
n8n 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n公司开源的一款支持持续集成与交付的工作流自动化工具。 n8n 2.32.1之前版本存在服务端请求伪造漏洞，该漏洞源于MCP Client节点存在服务端请求伪造保护绕过漏洞，可能允许已认证用户绕过SSRF保护，通过制作工作流向内部或受限主机发送请求，从而暴露内部服务并读取响应。
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-io n8n 0 ~ 2.32.1 -
n8n-io n8n 0 ~ 2.31.5 -

II. Public POCs for CVE-2026-72768

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III. Intelligence Information for CVE-2026-72768

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Vendor Advisories for CVE-2026-72768 (2)

Same Patch Batch · n8n-io · 2026-08-11 · 16 CVEs total

CVE-2026-72772 8.9 HIGH n8n before 2.32.1 Authentication Bypass via Token Exchange
CVE-2026-72765 8.7 HIGH n8n before 2.32.1 Remote Code Execution via Expression Sandbox Escape
CVE-2026-72767 8.7 HIGH n8n before 1.123.67 Remote Code Execution via Git node
CVE-2026-72766 8.2 HIGH n8n before 1.123.67 Arbitrary File Read via Send Email Node
CVE-2026-72762 7.7 HIGH n8n before 1.123.67 Arbitrary File Write via Edit Image Node
CVE-2026-72763 7.2 HIGH n8n before 1.123.67 Credential Exfiltration via Sub-Workflow
CVE-2026-72771 7.1 HIGH n8n before 2.32.1 Credential Restriction Bypass via AI/LLM Nodes
CVE-2026-72774 7.1 HIGH n8n before 1.123.67 Authentication Bypass via HTTP Request Node
CVE-2026-72770 7.1 HIGH n8n before 1.123.67 Path Traversal via Git Node Operations
CVE-2026-72749 7.1 HIGH n8n before 1.123.67 Prototype Pollution via Edit Fields
CVE-2026-72769 6.1 MEDIUM n8n before 1.123.67 Prototype Pollution via VM Expression Engine
CVE-2026-72775 5.8 MEDIUM n8n before 1.123.67 SQL Injection via PostgresTrigger Node
CVE-2026-72764 5.8 MEDIUM n8n before 1.123.67 Module Cache Poisoning via Code Node
CVE-2026-72750 5.3 MEDIUM n8n before 1.123.67 SQL Injection via executeQuery Operation
CVE-2026-72773 4.9 MEDIUM n8n before 2.32.1 Path Traversal via computer-use search_files

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-918

V. Comments for CVE-2026-72768

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