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Security audit

cargo-mcp

Security checks for vulnerabilities and agentic risk

Overview

Review this skill because its OpenClaw setup requires local software despite advertising a hosted connection with nothing to install.

For hosted-only use, connect the MCP endpoint directly and avoid the CLI installer unless you deliberately choose CLI functionality. The publisher should make that dependency optional. Use narrowly scoped credentials, confirm the workspace, and authorize costs and effects, including the initial 10–20-record sample. Sibling policies and external runtime code were not available in this artifact review.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied commands establish a local CLI environment rather than use the declared hosted MCP interface. This is a material change in access method and setup behavior, directly contradicting the promise that nothing needs to be installed. The workspace identity check is consistent with the declared purpose, but does not resolve the installation and authentication mismatch.

Content

No source excerpt is available for this finding.