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Security audit

Wechat Auto Post

Security checks for vulnerabilities and agentic risk

Overview

This is a simple Chinese WeChat content-writing skill with no executable code or persistence; its broad trigger and auto-post wording are worth noting but not high-risk.

Install this if you want Chinese WeChat-style article drafting. Be aware that the name suggests auto-posting, but the inspected skill only drafts and outputs content; review any generated content manually before publishing, especially for policy-sensitive topics.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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 (2)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The trigger conditions are broad and include generic requests such as creating social media content, which can cause the skill to activate outside its intended微信公众号 scope. Over-broad activation increases the chance of unintended routing, prompt hijacking of unrelated tasks, or accidental use of this skill in contexts where its behavior is inappropriate.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
83% confidence
Finding

All user-facing natural-language instructions in the skill are Chinese-only, and the file does not indicate that the language is optional or that the skill is intentionally restricted to Chinese-speaking users or a China-specific deployment. Under the stated policy, forcing a specific language without user opt-in is a locale-policy concern.

Content

No source excerpt is available for this finding.