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Security audit

Weather Cli

Security checks for vulnerabilities and agentic risk

Overview

This is a simple Chinese-language weather CLI instruction skill with disclosed network use and no hidden code or persistence.

Before installing, note that the documentation is Chinese-only and the examples rely on a weather command plus curl/jq; install system packages only if you are comfortable with that change, and remember city names will be sent to wttr.in for forecasts.

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
  • 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
Findings (1)

Natural-Language Policy Violations

Low
Confidence
95% confidence
Finding
The manifest description and all user-facing instructions in SKILL.md are presented only in Chinese. Under the policy, forcing a specific language without user opt-in is a natural-language policy violation unless the locale restriction is explicitly justified or a language choice is offered.

Static analysis

No suspicious patterns detected.