Is your AI safe? Threat analysis of MCP (Model Context Protocol)

Cyber Ark finished digging into the Model Context Protocol (MCP) security model and found some nasty vulnerabilities that could seriously mess with devs using AI coding tools.

Quick Context: MCP is what lets tools like Claude Desktop and Cursor connect to external services and your local files. Basically, it's an API layer for AI apps.

The Problems:
- Malicious Tool Registration: Attackers can publish “helpful” tools that actually steal your code or secrets
- Server Chaining: Legit servers can quietly route requests to malicious ones
- Hidden Prompt Injection: Servers can embed invisible instructions that hijack the AI
- Weak Auth: Most MCP servers don’t really check who’s calling them

Why It Matters:
If you’re using AI coding assistants with MCP:
- Your codebase could be exfiltrated
- API keys in env vars are exposed
- Custom integrations might be backdoored

Quick Fixes:
- Stick to verified MCP servers
- Check the official registry
- Read server code before installing
- Don’t keep secrets in env vars if using MCP
- Use clients that require approval before calling tools

This is what happens when we rush to plug AI into everything without thinking about security. MCP’s flexibility is a double-edged sword.

I have personally been trying various MCPs for quite a while since they started to become popular. While I was concerned about security, not gonna lie, I didn't put enough effort into reviewing every MCP server myself (it is open source and totally safe, right? 💀), as I was focused on adding new features to multiple prototypes I've been working on lately and was more concerned about the tool's efficiency and how it improves the workflow rather than its security. What's more, I see some companies also pushing for MCP adoption, and I hope they pay more attention to security than I did with my prototypes.

Do you use any MCP for game dev and find it helpful?

Worth a look if you’re building or integrating with MCP

https://www.cyberark.com/resources/threat-research-blog/is-your-ai-safe-threat-analysis-of-mcp-model-context-protocol

#ai #mcp