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mcp_so

MCP Substack Server

🤖 MCP Server for Substack integration with Claude AI Desktop. Download and parse Substack posts directly in your Claude conversations.

→ michalnaka/mcp-substack· listed on mcp_so
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// key findings
⚠️
Known vulnerabilities in dependencies: 4 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
// known CVEs in dependencies4 high5 low

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

high@modelcontextprotocol/sdk@0.6.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@0.6.1GHSA-w48q-cv73-mx4w

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

highundici@5.28.4GHSA-v9p9-hfj2-hcw8

Undici has Unhandled Exception in WebSocket Client Due to Invalid server_max_window_bits Validation

highundici@5.28.4GHSA-vrm6-8vpv-qv8q

Undici has Unbounded Memory Consumption in WebSocket permessage-deflate Decompression

lowundici@5.28.4GHSA-2mjp-6q6p-2qxm

Undici has an HTTP Request/Response Smuggling issue

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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/michalnaka-mcp-substack-znweq3)](https://m8ven.ai/mcp/michalnaka-mcp-substack-znweq3)
commit: ae00208d643603e6b490afa41f98e48021d56b13
code hash: 94aeb4e14600e4d7adbac038dbc2007995aa795332509cd6572cd1a8afa2d8d0
verified: 6/16/2026, 12:22:31 PM
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