MCP Gateway Demo

A reference implementation of an MCP server built with Express that integrates full OAuth 2.1 authorization and RFC9728 protected resource metadata. It enables secure, authenticated communication between MCP clients and servers using streamable HTTP transport and built-in authorization flows.

→ yylgit/mcp-gateway-demo · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 2 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 1 credential: JWT_SECRET

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies2 high1 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.0.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.0.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

lowuuid@10.0.0GHSA-w5hq-g745-h8pq

uuid: Missing buffer bounds check in v3/v5/v6 when buf is provided

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configAUTH_ISSUER— 授权服务器 issuer（可与 MCP 同源） http://localhost:3000

🔐 secretJWT_SECRET— HS256 密钥（生产建议 RS256 + JWKS）至少 32 字符

configMCP_RESOURCE_URI— MCP 资源 canonical URI（用于 aud 校验与 metadata） http://localhost:3000

configPORT— HTTP 端口 3000

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 6 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/yylgit-mcp-gateway-demo-a5xisg)](https://m8ven.ai/mcp/yylgit-mcp-gateway-demo-a5xisg)

commit: 1175f93a6142c5384cb8c98afa92da7bcf6e467a

code hash: 3466242a2e8fbd1e18db69de7c3eb55e3fe7a0db88577c898bac3b6f8d8c2f9d

verified: 6/11/2026, 11:19:24 AM

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