mcp-builder

Warn

Audited by Snyk on Jul 27, 2026

Risk Level: MEDIUM
Full Analysis

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

  • Third-party content exposure detected (high risk: 0.85). The required workflow instructs using WebFetch to load public web content (e.g., https://modelcontextprotocol.io/llms-full.txt and GitHub README URLs) at runtime, which would be outsider-authored free text ingested into the agent’s LLM context.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

  • Potentially malicious external URL detected (high risk: 0.90). The skill explicitly instructs "Use WebFetch to load: https://modelcontextprotocol.io/llms-full.txt", indicating the agent will fetch remote text at runtime that can directly control agent instructions/behavior.

Issues (2)

W011
MEDIUM

Third-party content exposure detected (indirect prompt injection risk).

W012
MEDIUM

Unverifiable external dependency detected (runtime URL that controls agent).

Audit Metadata
Risk Level
MEDIUM
Analyzed
Jul 27, 2026, 12:14 PM
Issues
2
Security Audit — snyk — mcp-builder