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.
History

Tue, 07 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Nhost cli
CPEs cpe:2.3:a:nhost:cli:*:*:*:*:*:*:*:*
Vendors & Products Nhost cli
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Fri, 03 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Nhost
Nhost nhost
Vendors & Products Nhost
Nhost nhost

Tue, 31 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 31 Mar 2026 14:30:00 +0000

Type Values Removed Values Added
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
References
Metrics cvssV4_0

{'score': 7.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-31T13:57:42.003Z

Updated: 2026-03-31T14:30:36.656Z

Reserved: 2026-03-26T15:57:52.323Z

Link: CVE-2026-34200

cve-icon Vulnrichment

Updated: 2026-03-31T14:30:25.876Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-31T15:16:17.670

Modified: 2026-04-07T21:08:51.357

Link: CVE-2026-34200

cve-icon Redhat

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