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I. Basic Information for CVE-2026-34200
Vulnerability Information

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Vulnerability Title
Nhost CLI MCP Server: Missing Inbound Authentication on Explicitly Bound Network Port
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nhost is an open source Firebase alternative with GraphQL. Prior to version 1.41.0, The Nhost CLI MCP server, when explicitly configured to listen on a network port, applies no inbound authentication and does not enforce strict CORS. This allows a malicious website visited on the same machine to issue cross-origin requests to the MCP server and invoke privileged tools using the developer's locally configured credentials. This vulnerability requires two explicit, non-default configuration steps to be exploitable. The default nhost mcp start configuration is not affected. This issue has been patched in version 1.41.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nhost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nhost是Nhost开源的一个后端即服务平台。 Nhost 1.41.0之前版本存在安全漏洞,该漏洞源于Nhost CLI MCP服务器在显式配置为监听网络端口时,未应用入站身份验证且未强制执行严格的CORS,可能导致同一机器上访问的恶意网站向MCP服务器发出跨域请求并使用开发人员本地配置的凭据调用特权工具。
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
VendorProductAffected VersionsCPESubscribe
nhostnhost < 1.41.0 -
II. Public POCs for CVE-2026-34200
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III. Intelligence Information for CVE-2026-34200
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IV. Related Vulnerabilities
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