mcp-builder
Warn
Audited by Snyk on Feb 15, 2026
Risk Level: MEDIUM
Full Analysis
MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).
- Third-party content exposure detected (high risk: 0.90). The skill explicitly instructs the agent to fetch and read external web documentation (e.g., https://modelcontextprotocol.io/sitemap.xml and raw GitHub URLs like https://raw.githubusercontent.com/modelcontextprotocol/.../README.md), to "use web search and WebFetch as needed," and the evaluation harness/connection code accepts arbitrary MCP server URLs (SSE/HTTP), so the agent will ingest untrusted, public third-party content as part of its workflow.
Audit Metadata