Cal.com MCP Server

Item: Cal.com MCP Server
Rating: 54
Author: M8ven

Exposes Cal.com scheduling tools to AI agents via MCP, enabling listing event types, checking availability, and managing bookings (create, cancel, reschedule).

→ imubashir9/calcom-mcp-server · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 18 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.

// known CVEs in dependencies18 high12 low

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

high@modelcontextprotocol/sdk@1.12.0GHSA-345p-7cg4-v4c7

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

high@modelcontextprotocol/sdk@1.12.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.0GHSA-w48q-cv73-mx4w

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

highaxios@1.7.0GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

highaxios@1.7.0GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

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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.

configLOG_LEVEL— debug, info, warn, error info

configPORT— HTTP server port 3000

configTRANSPORT— stdio npm start

configVOICE_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 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/imubashir9-calcom-mcp-server-103jgz)](https://m8ven.ai/mcp/imubashir9-calcom-mcp-server-103jgz)

commit: d31d93e014154a420338b56cfdb0d7f54da71dbe

code hash: 6a0e2889cb1c243da2b74433ab7d2ccc08e253c096f34ab64fc46efd74c6d884

verified: 6/23/2026, 10:25:22 AM

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