Security audit

土地增值税预缴与清算核对（免费版）

Security checks for vulnerabilities and agentic risk

Overview

This skill is a local Chinese land appreciation tax worksheet checker with no evidence of hidden network use, persistence, or unrelated system access.

Install only if you are comfortable running a local Node-based checker on tax worksheets. It does not provide tax advice or validate local policy rates, so verify its arithmetic output and any tax positions with the relevant source documents or a qualified professional.

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 (4)

Ae1

High

Category: analysis-evasion
Content: node scripts/run.mjs --sample # 先看样例
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected

Ae1

High

Category: analysis-evasion
Content: node scripts/run.mjs --sample # 先看样例
Confidence: 100% confidence
Finding: Referenced artifact was not completely inspected

Natural-Language Policy Violations

Medium

Confidence: 96% confidence
Finding: The file’s natural-language instructions, labels, advice strings, and user-facing outputs are entirely in Chinese, with no indication that users may choose another language or locale. Under the stated policy, forcing a specific language without opt-in is a natural-language policy violation.

Natural-Language Policy Violations

Low

Confidence: 90% confidence
Finding: The JSON text content is entirely in Chinese and provides no indication that language choice is optional or limited to a justified region-specific use case. The policy requires flagging language or locale constraints when they are imposed without user opt-in or explicit justification.

Static analysis

No suspicious patterns detected.