Security audit

stock-cache-utils

Security checks for vulnerabilities and agentic risk

Overview

This is a small stock-data cache helper that only manages caller-chosen local cache files and shows no hidden or malicious behavior.

Install this only if you want a Chinese/A-share oriented cache utility. Configure the cache directory deliberately, because the helper will create, overwrite, read, and clear cache.json in that directory; also review whether the 15:30 post-market window fits your data freshness expectations.

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
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

Findings (4)

Lp3

Medium

Category: MCP Least Privilege
Confidence: 70% confidence
Finding: Without declared permissions the skill's intent is opaque and cannot be validated.

Natural-Language Policy Violations

Medium

Confidence: 95% confidence
Finding: This code file contains natural-language documentation and runtime messages entirely in Chinese, including the module description and operational output. Under the stated policy, forcing a specific language without user opt-in is a locale-policy violation unless the constraint is explicitly justified, which is not present here.

Natural-Language Policy Violations

Low

Confidence: 90% confidence
Finding: The manifest description and main heading/body content are written in Chinese, and the file does not indicate that the skill supports other languages or that Chinese is required for a region-specific purpose. Under the policy, language constraints should be optional or clearly justified.

Intent-Code Divergence

Low

Confidence: 97% confidence
Finding: L053 的注释声明 A 股交易时间为“13:00-15:00”，但 L058 实际将 afternoon_end 设为 15:30，并把这段时间纳入 is_trading_time 判定。注释描述的业务边界与真实行为不一致，会误导调用方对缓存禁用时段和“交易时间”语义的理解。

Static analysis

No suspicious patterns detected.