Jovancoding Network-AI up to 5.4.4 MCP SSE Server lib/mcp-transport-sse.ts _isAuthorized NETWORK_AI_MCP_SECRET improper authorization

Summaryinfo

A vulnerability was found in Jovancoding Network-AI up to 5.4.4. It has been rated as critical. Affected by this issue is the function _isAuthorized of the file lib/mcp-transport-sse.ts of the component MCP SSE Server. Performing a manipulation of the argument NETWORK_AI_MCP_SECRET results in improper authorization. This vulnerability is reported as CVE-2026-46701. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Jovancoding Network-AI up to 5.4.4. This affects the function _isAuthorized of the file lib/mcp-transport-sse.ts of the component MCP SSE Server. The manipulation of the argument NETWORK_AI_MCP_SECRET with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Network-AI is a TypeScript/Node.js multi-agent orchestrator. Prior to version 5.4.5, the MCP SSE server defaults to an empty secret (`process.env['NETWORK_AI_MCP_SECRET'] ?? ''` at `bin/mcp-server.ts:89`), which causes `_isAuthorized` (`lib/mcp-transport-sse.ts:254`) to return `true` unconditionally for every request — no `Authorization` header is required. Simultaneously, `_handleRequest` sets `Access-Control-Allow-Origin: *` (`lib/mcp-transport-sse.ts:272`) on every response, so a cross-origin browser fetch can read the result without restriction. An unauthenticated attacker who can lure a user to a malicious web page can invoke all 22 exposed MCP tools — including `config_set`, `agent_spawn`, and `blackboard_write` — against a default-configured localhost server. Version 5.4.5 patches the issue.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-46701 since 05/16/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 5.4.5 eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• Jovancoding

Name

• Network-AI

Version

• 5.4.0
• 5.4.1
• 5.4.2
• 5.4.3
• 5.4.4

Website

• Product: https://github.com/Jovancoding/Network-AI/

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