yahoo-fantasy-mcp

Item: yahoo-fantasy-mcp
Rating: 56
Author: M8ven

Enables querying Yahoo Fantasy Sports leagues, rosters, and matchups via an MCP interface (read-only).

→ brettadams0/yahoo-fantasy-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 3 high

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

✅

10 tools verified — handlers match their declared behaviour

10 read-only tools verified — handlers contain no write/delete/exec

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// known CVEs in dependencies3 high

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

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

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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 5 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/brettadams0-yahoo-fantasy-mcp-ru05rn)](https://m8ven.ai/mcp/brettadams0-yahoo-fantasy-mcp-ru05rn)

commit: 32446b83948bc7b192f71b064f3d16e74caa97c6

code hash: 63b9f934230067c96a02900a184c6c3d36ceb42c1dfbb14118a1176cffb42609

verified: 7/29/2026, 9:29:30 AM

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