Security audit

民间借贷利息计算

Security checks for vulnerabilities and agentic risk

Overview

This skill is a local Chinese private-lending interest calculator with disclosed inputs, no network behavior, no persistence, and no hidden authority found.

Installers should understand this is a legal/financial calculation aid, not legal advice. Check assumptions, dates, LPR data freshness, and any court-specific rules before relying on the generated calculation sheet.

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
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 (5)

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: 89% confidence
Finding: The manifest description is entirely in Chinese and describes when the skill should be used, but it does not indicate that language choice is optional or that the skill is restricted to Chinese-speaking users. Under the policy, forcing a specific language without user opt-in can be a natural-language policy violation unless the locale constraint is explicitly documented and justified.

Natural-Language Policy Violations

Medium

Confidence: 96% confidence
Finding: This code file contains user-facing exception messages, help text, and final report content entirely in Chinese, such as the exception docstring at L032, parser description/help strings at L628-L652, and rendered report output at L525-L623. Because the skill forces a specific language for all interactions and does not provide any opt-in or alternative locale, it matches the natural-language policy violation criteria.

Natural-Language Policy Violations

Low

Confidence: 91% confidence
Finding: This markdown file contains user-facing natural-language instructions only in Chinese, starting from the title at L001. Under the policy rule, forcing a specific language without user opt-in can be a locale/language policy violation when no alternative or choice is provided.

Natural-Language Policy Violations

Low

Confidence: 89% confidence
Finding: This markdown file presents all headings, descriptions, and usage rules exclusively in Chinese. Under the stated policy, forcing a specific language without offering a language or locale choice can be a natural-language policy violation unless the locale restriction is explicitly documented and justified.

Static analysis

No suspicious patterns detected.