Lunar Calendar Vietnam

• Outcome: Pass
• Latest audit: Sep 11, 2026 · 2:15 PM UTC
• Version: 1.0.0

Overview

This skill is a local Vietnamese lunar-calendar helper with some accuracy and disclosure limitations, but no evidence of hidden access, persistence, exfiltration, or destructive behavior.

Install only if you want a local Vietnamese lunar-calendar lookup helper and are comfortable treating solar terms and fortune-style advice as approximate cultural guidance. Do not rely on it as an authoritative source for high-stakes scheduling without independent verification.

A.I.G

Vulnerability Patterns

• Skill Instruction Hijacking: Alters the agent's session goals or safety constraints when the skill loads
• Agent Memory Poisoning: Writes attacker-controlled rules into memory that affect later sessions
• Remote Payload Retrieval and Execution: Fetches external code whose behavior can change after review
• Embedded Malicious Code: Ships malicious scripts inside the skill and executes them locally
• Unauthorized Access and Privilege Escalation: Obtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns

• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Supply Chain: Unpinned Dependencies, External Script Fetching, Obfuscated Code
• Excessive Agency: Unrestricted Tool Access, Autonomous Decision Making, Scope Creep
• MCP Tool Poisoning: Hidden Instructions, Unicode Deception, Parameter Description Injection
• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration

Findings (14)

Tp4

High

• Category: MCP Tool Poisoning
• Confidence: 94% confidence

Finding

Phần lớn mã đúng là phục vụ lịch âm Việt Nam: có bảng dữ liệu năm, chuyển dương lịch sang âm lịch qua Julian day, Can Chi, giờ hoàng đạo, và các hàm hiển thị lịch. Tuy nhiên có khác biệt vật chất so với mô tả. Quan trọng nhất, không có khả năng chuyển từ âm lịch sang dương lịch dù đây là năng lực cốt lõi đã công bố. Ngoài ra, 24 tiết khí không được tính theo thiên văn hay theo năm/múi giờ; chỉ export một object các mốc MM-DD cố định. Đầu ra cũng không phải 'JSON Data kèm giải nghĩa' mà chủ yếu là HTML, string, alert và hàm dành cho trình duyệt; module exports chỉ phơi bày hàm chứ không tự tạo JSON response. Cuối cùng, tuy mô tả nhấn mạnh GMT+7, mã dùng Date mặc định môi trường và không có xử lý múi giờ +7 rõ ràng. Không thấy hành vi độc hại hay khả năng ngoài phạm vi nghiêm trọng, nhưng có thiếu sót đáng kể so với mô tả nên nên đánh dấu mismatch.

Content

No source excerpt is available for this finding.

Ae1

High

• Category: analysis-evasion
• Confidence: 100% confidence

Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 36)May include surrounding context.

md

Dùng bash / terminal để chạy `amlich_calculator.js` (ưu tiên đường dẫn **tương đối** để dễ chia sẻ skill):

Ae1

High

• Category: analysis-evasion
• Confidence: 100% confidence

Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 40)May include surrounding context.

md

Dùng bash / terminal để chạy `amlich_calculator.js` (ưu tiên đường dẫn **tương đối** để dễ chia sẻ skill):

Ae1

High

• Category: analysis-evasion
• Confidence: 100% confidence

Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 41)May include surrounding context.

md

Dùng bash / terminal để chạy `amlich_calculator.js` (ưu tiên đường dẫn **tương đối** để dễ chia sẻ skill):

Natural-Language Policy Violations

Medium

• Category: Not specified by scanner
• Confidence: 91% confidence

Finding

The instruction says to convert the terminal JSON result into natural language and answer the user in a 'thân thiện' style, but the surrounding skill description is entirely Vietnamese and does not provide any user opt-in or alternative language behavior. Under the policy rule, forcing a specific language/locale without user choice is a natural-language policy violation unless clearly documented as a justified region-specific constraint.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium

• Category: Not specified by scanner
• Confidence: 91% confidence

Finding

The manifest describes a lookup/conversion tool whose output is 'JSON Data kèm giải nghĩa ngôn ngữ tự nhiên'. In contrast, much of this file is devoted to browser UI generation and interaction: reading URL parameters, generating HTML tables/styles/links, showing alerts, printing, and updating window status. Those are additional behaviors not reflected in the declared skill description.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium

• Category: Not specified by scanner
• Confidence: 87% confidence

Finding

The manifest claims core support for '24 Tiết Khí' and describes the skill as accurate according to the Vietnamese calendar system (GMT+7). However, the code only exports a hard-coded mapping of solar-term names to fixed MM-DD strings, with no year-aware or timezone-based astronomical calculation. That behavior is materially weaker than the claimed capability.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium

• Category: Not specified by scanner
• Confidence: 93% confidence

Finding

The file is written as guidance specifically for answering users about Vietnamese lunar-calendar topics, and line L03 instructs the agent to respond using this file when users ask related questions. There is no indication that the user can choose another language or locale, which can violate a language/locale policy when applied broadly.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium

• Category: Not specified by scanner
• Confidence: 91% confidence

Finding

The file's natural-language interface text is presented exclusively in Vietnamese, including the description and usage/help content. The policy for this category flags language-forcing behavior unless the skill offers a language choice or clearly documents that it is intentionally region-specific.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium

• Category: Not specified by scanner
• Confidence: 96% confidence

Finding

The script exposes a --with-fortune mode that returns fortune-telling advice beyond the declared calendrical conversion and reference scope. Hidden or undocumented capabilities increase the skill’s effective behavior surface and can mislead callers into treating generated advice as endorsed functionality, especially when the output is mixed into otherwise factual calendar data.

Content

No source excerpt is available for this finding.

Context-Inappropriate Capability

Medium

• Category: Not specified by scanner
• Confidence: 94% confidence

Finding

The fortune/advice block is hardcoded placeholder content unrelated to actual lunar calculations, yet it is presented in the same JSON structure as authoritative date results. This can cause users or downstream systems to rely on fabricated recommendations as if they were derived from the calendar logic, creating integrity and trust issues.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low

• Category: Not specified by scanner
• Confidence: 91% confidence

Finding

The natural-language description states the skill is specifically for 'Lịch Âm Việt Nam' and is written only in Vietnamese, which indicates a locale/language constraint. In this manifest there is no accompanying note that the skill is region-specific by design or that users can opt into this language, so it appears to impose a specific language/locale without documented choice.

Content

No source excerpt is available for this finding.

Unpinned Dependencies

Low

• Category: Supply Chain
• Confidence: 40% confidence

Finding

Dependencies lack version pinning, allowing potential malicious package updates. Consider pinning versions.

Content

Scanner excerpt · package.json (reported line 12)May include surrounding context.

json

"author": "OpenClaw Team",
  "license": "MIT",
  "dependencies": {
    "minimist": "^1.2.8"
  }
}

Natural-Language Policy Violations

Low

• Category: Not specified by scanner
• Confidence: 88% confidence

Finding

The title explicitly labels the content as a Vietnam version and the entire document is presented only in Vietnamese. Under the stated policy, forcing a specific language or locale without user opt-in can be a natural-language policy violation unless the constraint is clearly documented as a justified region-specific tool.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.