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Security audit

Alpha Vantage CLI

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Alpha Vantage helper that uses a disclosed API key and network request for its stated market-data purpose.

Before installing, provide the API key through ALPHAVANTAGE_API_KEY rather than hardcoding it, avoid passing the key on the command line where shell history or process listings may expose it, and confirm your Alpha Vantage plan and redistribution rights for public or commercial use.

Vulnerability Patterns
  • 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
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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
Findings (1)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
91% confidence
Finding

The skill references capabilities that inherently require network access and environment-variable secret access, but it does not declare an explicit tool scope such as allowed-tools or permissions. That creates an authorization ambiguity where an agent/runtime may grant broader capabilities than intended, increasing the risk of unintended outbound requests or exposure/misuse of the Alpha Vantage API key.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.