ClawHub
Back to skill

Security audit

ly-train-12306

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward 12306 train-ticket availability lookup that uses public railway endpoints and a local station-code cache.

Install only if you are comfortable with the skill contacting 12306 public railway endpoints using your queried route and date. It does not buy tickets or require login credentials, and its local persistence is limited to station-code cache data.

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 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
84% confidence
Finding

The skill advertises a network-capable script and static analysis also detected file-write capability, but the manifest does not declare any tool scope restrictions such as permissions or allowed-tools. This creates unnecessary ambiguity about what the skill may access at runtime and weakens least-privilege controls, increasing the chance that a modified or compromised script could perform broader actions than users expect.

Content

No source excerpt is available for this finding.