fastify-mcp-server

Item: fastify-mcp-server
Rating: 74
Author: M8ven

Fastify plugin to easily spin up Model Context Protocol (MCP) HTTP servers

→ flaviodelgrosso/fastify-mcp-server · listed on github_topic

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// key findings

⚠️

Known vulnerabilities in dependencies: 4 high

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

⚠️

Tests do not pass

Either the test suite is broken or the code regressed. Either way the published behaviour can’t be verified by the publisher’s own tests.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// known CVEs in dependencies4 high2 low

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

high@modelcontextprotocol/sdk@1.25.1GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.25.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

highfastify@5.6.2GHSA-247c-9743-5963

Fastify has a Body Schema Validation Bypass via Leading Space in Content-Type Header

highfastify@5.6.2GHSA-jx2c-rxcm-jvmq

Fastify's Content-Type header tab character allows body validation bypass

lowfastify@5.6.2GHSA-444r-cwp2-x5xf

fastify: request.protocol and request.host Spoofable via X-Forwarded-Proto/Host from Untrusted Connections

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// required environment variables

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

configREDIS_DB

configREDIS_HOST

configREDIS_PORT

// 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 8 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/flaviodelgrosso-fastify-mcp-server-gfgi8y)](https://m8ven.ai/mcp/flaviodelgrosso-fastify-mcp-server-gfgi8y)

commit: 7583fa6e81203a2f7a2dd839eb1fe2a193b62337

code hash: d900a7112c04b792f8a1d78af8e603e913745b769086c15f7fc9d5cfae051c75

verified: 6/14/2026, 10:51:19 AM

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