mcp-outlook-lite

Lightweight MCP server that enables AI agents to manage Microsoft Outlook email, calendar, and files using PKCE authentication with only a Client ID.

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// key findings

🚨

Known vulnerabilities in dependencies: 1 critical, 2 high

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

// known CVEs in dependencies1 critical2 high

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

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

highxlsx@0.18.5GHSA-4r6h-8v6p-xvw6

Prototype Pollution in sheetJS

highxlsx@0.18.5GHSA-5pgg-2g8v-p4x9

SheetJS Regular Expression Denial of Service (ReDoS)

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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.

configAZURE_CLIENT_ID— e =your-client-id \

configAZURE_TENANT_ID— e =consumers \

configDISPLAY

configDOCKER_CONTAINER

configMCP_OUTLOOK_DEVICE_CODE— No Set to 1 to force device code flow

configMCP_OUTLOOK_REDIRECT_URI

configMCP_OUTLOOK_WORK_DIR— No Directory for large file downloads

configSSH_CLIENT

configSSH_CONNECTION

configSSH_TTY

configWAYLAND_DISPLAY

configcontainer— SSH / : device code printed to stderr — follow the link

// 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 2 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/w21180239-mcp-outlook-lite-6ozxl6)](https://m8ven.ai/mcp/w21180239-mcp-outlook-lite-6ozxl6)

commit: 749db2b0e321ebade24f560cd752ad973ba1ed80

code hash: d07fe5622076dff9c25d7bdb9ce150a37b6cb59e0c29764385a0a7ddc22bf188

verified: 6/23/2026, 10:08:37 AM

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