Modular Outlook MCP Server

MCP server for Claude to access Outlook data via Microsoft Graph API

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// key findings

🚨

Known vulnerabilities in dependencies: 1 critical, 1 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.

🔐

You'll be asked for 2 credentials: MS_CLIENT_SECRET, OUTLOOK_CLIENT_SECRET

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

// known CVEs in dependencies1 critical1 high

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

critical@modelcontextprotocol/inspector@0.10.2GHSA-7f8r-222p-6f5g

MCP Inspector proxy server lacks authentication between the Inspector client and proxy

high@modelcontextprotocol/inspector@0.10.2GHSA-g9hg-qhmf-q45m

MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server

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.

configMS_AUTHORITY_HOST

configMS_CLIENT_ID— your-application-client-id-here

🔐 secretMS_CLIENT_SECRET— your-client-secret-VALUE-here

configMS_REDIRECT_URI

configMS_SCOPES

configMS_TENANT_ID— your-tenant-id-here

configMS_TOKEN_ENDPOINT

configOUTLOOK_CLIENT_ID— For Claude Desktop config, you'll use and OUTLOOK_CLIENT_SECRET

🔐 secretOUTLOOK_CLIENT_SECRET— For Claude Desktop config, you'll use OUTLOOK_CLIENT_ID and

configUSE_TEST_MODE— "": "false",

// 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 4 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/ryaker-outlook-mcp-kf87jk)](https://m8ven.ai/mcp/ryaker-outlook-mcp-kf87jk)

commit: 95d6ff2d248903c086f17782c2de28e16016e6aa

code hash: 8c438d91ba646b8385358473c4afe864809d615457b56269f1349cb7f0ff25c0

verified: 7/2/2026, 9:19:28 AM

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