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CVE-2026-41495— n8n-MCP 未授权请求泄露敏感日志漏洞

CVSS 5.3 · Medium
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一、 漏洞 CVE-2026-41495 基础信息

漏洞信息
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Vulnerability Title
n8n-MCP Logs Sensitive Request Data on Unauthorized /mcp Requests
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to version 2.47.11, when n8n-mcp runs in HTTP transport mode, incoming requests to the POST /mcp endpoint had their request metadata written to server logs regardless of the authentication outcome. In deployments where logs are collected, forwarded to external systems, or viewable outside the request trust boundary (shared log storage, SIEM pipelines, support/ops access), this can result in disclosure of: bearer tokens from the Authorization header, per-tenant API keys from the, x-n8n-key header in multi-tenant setups, JSON-RPC request payloads sent to the MCP endpoint. Access control itself was not bypassed — unauthenticated requests were correctly rejected with 401 Unauthorized — but sensitive values from those rejected requests could still be persisted in logs. This issue has been patched in version 2.47.11.
来源: 美国国家漏洞数据库 NVD
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
通过日志文件的信息暴露
来源: 美国国家漏洞数据库 NVD

受影响产品

厂商产品影响版本CPE订阅
czlonkowskin8n-mcp < 2.47.11 -

二、漏洞 CVE-2026-41495 的公开POC

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三、漏洞 CVE-2026-41495 的情报信息

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同批安全公告 · czlonkowski · 2026-05-08 · 共 3 条

CVE-2026-422824.3 MEDIUMn8n-MCP HTTP模式下敏感工具调用参数泄露漏洞
CVE-2026-44694n8n-mcp 认证SSRF漏洞

IV. Related Vulnerabilities

Same product: n8n-mcp
Same vendor: czlonkowski
Same weakness: CWE-532

V. Comments for CVE-2026-41495

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