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CVE-2026-42856— Network-AI: Missing authentication on MCP HTTP endpoint allows unauthenticated privileged tool calls

Quick assessment

Affected
Jovancoding Network-AI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Network-AI是Jovan Marinovic个人开发者的一款多智能体编排与治理工具。 Network-AI 5.1.3之前版本存在访问控制错误漏洞，该漏洞源于MCP HTTP传输未对JSON-RPC工具调用请求进行认证、会话、来源或令牌检查，且默认绑定地址为0.0.0.0，可能导致任意网络可达方枚举和调用特权管理工具。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Jovancoding Network-AI < 5.1.3 affected
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I. Basic Information for CVE-2026-42856

Vulnerability Information
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Vulnerability Title
Network-AI: Missing authentication on MCP HTTP endpoint allows unauthenticated privileged tool calls
Source: CVE Program / CVE List V5
Vulnerability Description
Network-AI is a TypeScript/Node.js multi-agent orchestrator. Prior to 5.1.3, the MCP HTTP transport accepts JSON-RPC tools/call requests with no authentication, session, origin, or token check, and dispatches them directly to the orchestrator's tool registry. The default bind address is 0.0.0.0. As a result, any party with network reachability to the service can enumerate and invoke privileged management tools. This vulnerability is fixed in 5.1.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Network-AI 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Network-AI是Jovan Marinovic个人开发者的一款多智能体编排与治理工具。 Network-AI 5.1.3之前版本存在访问控制错误漏洞，该漏洞源于MCP HTTP传输未对JSON-RPC工具调用请求进行认证、会话、来源或令牌检查，且默认绑定地址为0.0.0.0，可能导致任意网络可达方枚举和调用特权管理工具。
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

Vendor Product Affected Versions CPE Subscribe
Jovancoding Network-AI < 5.1.3 -

II. Public POCs for CVE-2026-42856

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III. Intelligence Information for CVE-2026-42856

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Vendor Advisories for CVE-2026-42856 (1)

IV. Related Vulnerabilities

Same product: Network-AI
Same vendor: Jovancoding
Same weakness: CWE-306

V. Comments for CVE-2026-42856

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