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Security audit

Wechat Article Writer V2

Security checks for vulnerabilities and agentic risk

Overview

This skill is a Chinese WeChat article drafting and formatting guide with no executable code or hidden high-impact behavior.

Install this if you want help drafting WeChat public-account articles in its custom Markdown module format. Review generated public-facing content, links, public-account IDs, and external image URLs before publishing.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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)

Hidden Instructions

High
Category
Prompt Injection
Confidence
60% confidence
Finding

Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Content

Scanner excerpt · references/module_reference.md (reported line 1)May include surrounding context.

md
# 微信公众号排版模块完整参考

本文档列出全部 40 个 fenced block 模块的精确字段说明和写法示例。

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The skill description is broadly scoped to 'when the user needs to write, edit, or format WeChat public account articles' without clear exclusion boundaries. This can cause the agent to invoke the skill for loosely related requests and let the skill steer outputs in contexts where a narrower or safer capability should apply, increasing prompt-routing errors and unintended file generation.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The tags include broad natural-language trigger phrases like '写一篇公众号' and generic content categories, which may overlap with ordinary user speech. In agentic systems that use tags for retrieval or invocation, this raises the chance of accidental activation and inappropriate delegation, especially for general writing requests that only partially match the skill.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
85% confidence
Finding

The title explicitly frames the skill reference around WeChat official-account formatting in Chinese, which establishes a fixed language/locale context. Across the document, the instructions and examples assume Chinese-language output and a China-specific publishing platform without stating that this is an intentional locale-specific tool or offering alternatives.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.