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.
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History
Tue, 31 Mar 2026 15:15:00 +0000
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Tue, 31 Mar 2026 14:30:00 +0000
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| 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. | |
| Title | Nhost CLI MCP Server: Missing Inbound Authentication on Explicitly Bound Network Port | |
| Weaknesses | CWE-306 CWE-942 |
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-31T14:30:36.656Z
Reserved: 2026-03-26T15:57:52.323Z
Link: CVE-2026-34200
Updated: 2026-03-31T14:30:25.876Z
Status : Received
Published: 2026-03-31T15:16:17.670
Modified: 2026-03-31T15:16:17.670
Link: CVE-2026-34200
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OpenCVE Enrichment
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