Back to skill

Security audit

Cn Percentage Tool

Security checks for vulnerabilities and agentic risk

Overview

This is a simple Chinese-language percentage calculator with no evidence of hidden data access, network execution, persistence, or privilege-seeking behavior.

Installers should expect a Chinese-language command-line calculator. The README includes promotional external links, but the code itself does not contact those sites or require credentials.

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
  • 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

Low
Category
Not specified by scanner
Confidence
89% confidence
Finding

The skill name, description, headings, and usage guidance are presented in Chinese only, with no note that the language is optional or targeted by user preference. This can violate a language/locale policy when skills are expected to avoid forcing a specific language without user opt-in.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The module title and user-facing descriptions are entirely in Chinese, including help text and error messages, which imposes a specific language/locale on users. The file does not indicate that this is an opt-in language choice or that the tool is intentionally limited to a Chinese-speaking context.

Content

No source excerpt is available for this finding.