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Security audit

mcp-bridge

Security checks for vulnerabilities and agentic risk

Overview

The skill is a straightforward MCP bridge setup guide, with disclosed npm installation and MCP server configuration, but users should treat its unpinned package commands and token example carefully.

Before installing, pin reviewed package versions where possible, avoid running npx -y against unreviewed packages, prefer a project-local install over a global install, and provide GitHub credentials through a secret manager or protected environment rather than typing a real token into the command line.

Vulnerability Patterns
  • Insecure DependenciesIntroduces malicious components through unsafe dependency sources
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
Findings (2)

T08 · Insecure Dependencies

Warning
Location
SKILL.md:12
Finding

Unpinned Third-Party Packages Are Downloaded and Executed

Content
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Remediation
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T09 · Insecure Skill Coding Practices

Note
Location
SKILL.md:69
Finding

Example Encourages Entering an Access Token Directly in a Shell Command

Content
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Remediation
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Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep