SGU MCP

Item: SGU MCP
Rating: 0
Author: M8ven

An MCP server for The Skeptics' Guide to the Universe podcast — search transcripts, look up episodes, pull Science or Fiction, and search news items, all from inside Claude.

→ matthewnigelgillet-cloud/sgu-mcp · listed on glama

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// key findings

🚨

Code appears obfuscated

2 files are unreadable to a human reviewer. Cannot audit what they do.

🚨

Known vulnerabilities in dependencies: 1 critical, 5 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

🔐

You'll be asked for 3 credentials: OPENAI_API_KEY, SGU_MCP_TOKEN, VOYAGE_API_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies1 critical5 high3 low

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

criticalfast-xml-parser@4.5.0GHSA-m7jm-9gc2-mpf2

fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names

high@modelcontextprotocol/sdk@1.12.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highfast-xml-parser@4.5.0GHSA-8gc5-j5rx-235r

fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)

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// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configEMBED_PROVIDER— openai npm run embed # needs OPENAI_API_KEY (one-time, ~cents)

configHOST

🔐 secretOPENAI_API_KEY— EMBED_PROVIDER=openai npm run embed # needs (one-time, ~cents)

configPORT

configSGU_CORS_ORIGIN

configSGU_DB_SRC

configSGU_DB_URL

🔐 secretSGU_MCP_TOKEN— $(openssl rand -hex 24) npm run start:http # serves POST /mcp on :8788

🔐 secretVOYAGE_API_KEY— EMBED_PROVIDER=voyage npm run embed # needs

// 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 8 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/matthewnigelgillet-cloud-sgu-mcp-1kv0ml)](https://m8ven.ai/mcp/matthewnigelgillet-cloud-sgu-mcp-1kv0ml)

commit: cd92c96613d0b557af6e7cab1c4efc179d36651b

code hash: c4333da12dcf71b67e3814df1773f761acee38cc6f46a710093677b024ab84e7

verified: 6/23/2026, 10:37:43 AM

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