Back to skill

Security audit

Wechat To Obsidian

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed WeChat-to-Obsidian clipping workflow, with limited local file writes that match its stated purpose, though the package appears incomplete.

Before installing, be aware that this skill is intended to fetch WeChat article content and write Markdown/images into a local Obsidian vault or chosen directory. Confirm the output path before use, use --no-img if you do not want images downloaded, and verify the missing script/config/requirements files are included in any actual install package before expecting it to run.

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
92% confidence
Finding

The skill description includes broad natural-language trigger phrases like '存一下 / 保存到笔记 / 转成 Markdown / 剪藏到 Obsidian / 保存到知识库', which can match ordinary conversation too loosely when a WeChat URL is present. This increases the chance of unintended invocation, causing the agent to fetch remote content and write files into a local Obsidian vault without sufficiently explicit user intent.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The trigger condition says the skill should activate when the user provides a WeChat article link and asks to save/clip/convert it, but it does not define clear non-trigger cases or disambiguation rules. In an agentic environment, ambiguous activation can lead to unnecessary network requests and local filesystem writes, which are meaningful side effects even if the content source is limited to mp.weixin.qq.com.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.