What are MCP servers used for?

MCP servers connect LLMs to tools like files, DBs, APIs—enabling real actions from prompts.

How do I prevent command injection in MCP?

Avoid shell=True, use list args for subprocess, sanitize with regex—no user input interpolation.

Not without these 22 checks—43% audited were vulnerable to basic attacks.

MCP servers are exploding as AI's new backbone. But 43% I've audited are wide open to attacks—here's how to slam those doors shut.

theAIcatchup Apr 08, 2026 3 min read

43% of audited MCP servers had command injection flaws—audit yours now. 𝕏
Use Pydantic schemas, realpath validation, and no shell=True for bulletproof tools. 𝕏
MCP security echoes 90s web vulns; proactive checks enable safe AI expansion. 𝕏

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#AI tool security #LLM tools #MCP servers #command injection #security checks

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Originally reported by dev.to