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Security audit

人民币大写转换工具,将数字金额转换为人民币大写金额字符串。

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small RMB amount-to-Chinese-uppercase converter with no evidence of hidden access, persistence, network use, or unsafe behavior.

Install only if you need Chinese RMB uppercase amount formatting. The skill appears locally scoped and low risk, but users should understand that its interface and output are Chinese/RMB-specific.

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
  • 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 (4)

Tp4

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The declared purpose claims a specific functional capability: converting numeric amounts to uppercase RMB strings. However, the supplied code does not implement that behavior at all; it is effectively empty. This is a material mismatch in primary purpose because the code does not perform the described function, nor any related supporting logic.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The file's natural-language description and usage instructions are presented only in Chinese, which imposes a specific language on users without any opt-in or alternative. The policy allows locale constraints only when explicitly offered as a choice or clearly justified as region-specific, neither of which is stated here.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

This manifest contains user-facing natural language only in Chinese, which can force a specific language/locale experience without user opt-in. The file does not indicate that the skill is intentionally region-specific or that users may choose another language.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
92% confidence
Finding

The manifest description "人民币大写转换工具" indicates a locale-specific behavior centered on Chinese RMB formatting, but the file does not state that this is limited to Chinese-language or China-specific use cases, nor does it mention user opt-in for the locale constraint. Under the policy for natural-language violations, forcing a specific language or locale without explicit choice or justification should be flagged.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.