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MCP packages harbor hidden vulnerabilities and typosquatting risks

A security audit of 31 MCP server packages on npm and PyPI revealed significant vulnerabilities, with 11 packages containing a total of 54 unique vulnerabilities across their installed dependency trees. This highlights a critical flaw where direct package checks are insufficient, as malicious code or outdated dependencies can be hidden within the broader installed tree. The MCP ecosystem is particularly vulnerable to typosquatting and supply chain attacks due to its decentralized nature, lack of a central registry, and heavy reliance on AI-generated recommendations, which can inadvertently suggest compromised packages. AI

IMPACT AI coding assistants can recommend vulnerable or outdated packages, necessitating live checks to mitigate supply chain risks.

RANK_REASON Security audit and analysis of vulnerabilities in a specific software ecosystem (MCP) and its integration with AI tools.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 3 sources. How we write summaries →

MCP packages harbor hidden vulnerabilities and typosquatting risks

COVERAGE [3]

  1. dev.to — MCP tag TIER_1 English(EN) · Bindfort ·

    The MCP package looked clean. The installed tree did not.

    <p>We audited 31 MCP server packages across npm and PyPI.</p> <p>For each one, we ran two checks:</p> <p>a direct check of the top-level package<br /> a scan of the installed dependency tree<br /> The direct package check found 1 finding.</p> <p>The installed trees found 69.</p> …

  2. dev.to — MCP tag TIER_1 English(EN) · Freshdeps ·

    AI coding agents recommend stale npm/PyPI packages — I built a live MCP check for it

    <h2> The problem: your AI agent's package knowledge is months stale </h2> <p>I kept hitting the same failure mode while pair-coding with Claude and Cursor: the agent confidently recommends a package, I install it, and only later find out it was deprecated, the repo is archived, o…

  3. dev.to — MCP tag TIER_1 English(EN) · Truong Bui ·

    The MCP Package That’s One Character Away From Yours

    <p>Let me tell you about the event-stream incident.</p> <p>In 2018, a popular npm package with 2 million weekly downloads was handed off to a new maintainer. That new maintainer embedded a payload inside it targeting Bitcoin wallets. Nobody noticed for weeks. Not because develope…