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Security audit

lunar-converter

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small local Chinese lunar/solar date converter with no evidence of hidden access, persistence, network use, or unsafe behavior.

Installers should understand that the skill is documented and returns output in Chinese, and it depends on the local lunardate Python library being available. No sensitive access or persistent behavior was found.

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 (2)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The file’s title, docstrings, CLI usage text, and result strings are written entirely in Chinese, indicating the skill is designed to operate in a single language. Under the policy, a forced language without user opt-in or a documented region-specific justification is a natural-language policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The natural-language content in the manifest description and headings/instructions is exclusively Chinese, which effectively forces a specific language for users. The file does not provide an opt-in, alternative language, or a documented reason that the skill must be Chinese-only.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.