AIWerk/mcp-server-cal

Item: AIWerk/mcp-server-cal
Rating: 56
Author: M8ven

Connects AI assistants to Cal.com for managing bookings, event types, and availability through natural language.

→ AIWerk/mcp-server-cal · listed on glama

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// key findings

🚨

Known vulnerabilities in dependencies: 1 critical, 3 high

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

🔐

You'll be asked for 1 credential: CAL_API_KEY

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

// known CVEs in dependencies1 critical3 high

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

criticalvitest@3.2.1GHSA-5xrq-8626-4rwp

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

high@modelcontextprotocol/sdk@1.19.1GHSA-345p-7cg4-v4c7

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

high@modelcontextprotocol/sdk@1.19.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.19.1GHSA-w48q-cv73-mx4w

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

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.

🔐 secretCAL_API_KEY— 2. Install Cal.com from the catalog and paste your .

configCAL_BASE_URL— No https://api.cal.com/v2 Override the Cal.com API base URL

// 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/aiwerk-mcp-server-cal-0snkh4)](https://m8ven.ai/mcp/aiwerk-mcp-server-cal-0snkh4)

commit: aa2e4aed961df2432cf342f4a787706b608269b9

code hash: 6887e99b0969e0a95cf848ebb2fa4c0f53a5278565c96b60d42a4950ee3be190

verified: 6/17/2026, 11:37:37 AM

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