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Security script checks MCP servers for 40 critical default vulnerabilities

By PulseAugur Editorial · [1 sources] ·

A security vulnerability check script has been released to identify four common default configurations that led to 42 Common Vulnerabilities and Exposures (CVEs) in MCP servers. These vulnerabilities, some with critical CVSS scores of 10.0, include listening on all interfaces, missing Host or Origin checks, and referencing upstream dependencies by branch instead of a specific digest. The provided Python script, requiring only Python 3 and ripgrep, aims to detect these issues with a focus on speed and readability, though it may produce false positives. AI

IMPACT This script helps developers identify and fix security flaws in MCP servers, improving overall system security.

RANK_REASON The item describes a script for checking software configurations, which falls under the category of a tool.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Security script checks MCP servers for 40 critical default vulnerabilities

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15 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
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Tool
The item describes a script for checking software configurations, which falls under the category of a tool.
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product, other
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Standard
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Breaking (< 6h)
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COVERAGE [1]

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

    Check your MCP server for the four defaults that caused 40 CVEs last week

    <p>Forty-two CVEs mentioning MCP were published between 2026-08-25 and<br /> 2026-09-01. Nine at CVSS 9.0 or above, two at 10.0. I wrote up why that<br /> shape is what it is [in the companion piece]. This post is the runnable<br /> half: a check you can point at your own MCP ser…

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