Slack MCP Server

A Slack MCP server for Claude Code that provides full messaging, channels, search, and threads across multiple Slack workspaces.

→ coreyepstein/advanced-slack-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 2 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.

✅

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 dependencies2 high

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

high@modelcontextprotocol/sdk@1.0.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.0.0GHSA-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.

configEXPECTED_USER

configTEST_CHANNEL— bot-testing npx tsx scripts/verify-e2e.ts

// 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/coreyepstein-advanced-slack-mcp-vtrdqc)](https://m8ven.ai/mcp/coreyepstein-advanced-slack-mcp-vtrdqc)

commit: 2842512c1ebbd3f2a4ca161857c2e3302328beda

code hash: c69c5b43a70bd911eee4e8c861fd4b55b44d48c4f7cfb295ffbb499d95c857d7

verified: 6/10/2026, 10:16:05 AM

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