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YouTube Transcript MCP Server

Enables AI assistants to retrieve transcripts from YouTube videos via a serverless API deployed on Cloudflare Workers.

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// key findings
🚨
Known vulnerabilities in dependencies: 1 critical, 7 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
⚠️
Tests do not pass
Either the test suite is broken or the code regressed. Either way the published behaviour can’t be verified by the publisher’s own tests.
// known CVEs in dependencies1 critical7 high3 medium21 low

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

criticalvitest@3.0.7GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

high@modelcontextprotocol/sdk@1.9.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.9.0GHSA-w48q-cv73-mx4w

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

highhono@4.7.6GHSA-3vhc-576x-3qv4

Hono JWK Auth Middleware has JWT algorithm confusion when JWK lacks "alg" (untrusted header.alg fallback)

highhono@4.7.6GHSA-f67f-6cw9-8mq4

Hono JWT Middleware's JWT Algorithm Confusion via Unsafe Default (HS256) Allows Token Forgery and Auth Bypass

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// 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 7 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/objones25-remote-cloudflare-youtube-transcript-mcp-server-29gnwo)](https://m8ven.ai/mcp/objones25-remote-cloudflare-youtube-transcript-mcp-server-29gnwo)
commit: e3bfda4d21113dd9f7ee012dc5d657c23794e150
code hash: 28ec9f0f96c84a18589d4c3b2c48edcb212e60ab026f147b50f8c615bfeeba62
verified: 6/15/2026, 1:52:31 PM
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