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Security audit

Video Channels Update Push

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple Markdown-based helper for checking public video-channel updates, with minor documentation and localization issues but no evidence of hidden or unsafe behavior.

Before installing, note that the instructions are Chinese-only and the channel-list filename should be clarified. The skill appears limited to maintaining a small list of public video channels and checking recent uploads; do not provide platform credentials to it unless you separately trust the environment and understand why login is needed.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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 (3)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The manifest description and all user-facing instructions in SKILL.md are Chinese-only, which can amount to a language policy violation when no user opt-in or alternative language is provided. The file does not indicate that the skill is intentionally restricted to Chinese-speaking users or a China-specific compliance context.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Low
Category
Not specified by scanner
Confidence
94% confidence
Finding

The documentation says the channel list is stored in video-channels.md at L17, but later instructs users to read youtube-channels.md at L34 and even mentions editing youtube-channels.md at L22. This is an active contradiction in the skill's own instructions about where its managed channel data actually resides.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
90% confidence
Finding

This markdown file presents all user-facing content in Chinese, including the title, description, table headers, and changelog. Under the policy, forcing a specific language without user opt-in can be a natural-language policy violation unless the locale constraint is explicitly justified, which is not stated here.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.