CVE-2026-46701

Network-AI: Unauthenticated Cross-Origin MCP Tool Invocation via Empty Default Secret

Published Jul 20, 2026 CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-j3vx-cx2r-pvg8 Network-AI: Unauthenticated Cross-Origin MCP Tool Invocation via Empty Default Secret
History
Type Values Removed Values Added
First Time appeared Network-ai
Network-ai network-ai
CPEs cpe:2.3:a:network-ai:network-ai:*:*:*:*:*:*:*:*
Vendors & Products Network-ai
Network-ai network-ai
Type Values Removed Values Added
First Time appeared Jovancoding
Jovancoding network-ai
Vendors & Products Jovancoding
Jovancoding network-ai
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Network-AI: Unauthenticated Cross-Origin MCP Tool Invocation via Empty Default Secret
Weaknesses CWE-346
References
Metrics cvssV3_1

{'score': 7.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 20, 2026, 7:07 PM
Reserved
May 15, 2026, 11:26 PM
Status
Analyzed
Published
Jul 20, 2026, 5:17 PM
Modified
Oct 24, 2026, 8:10 PM