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Security audit

Frontend Design Extractor

Security checks for vulnerabilities and agentic risk

Overview

This skill is a UI design-system helper with broad but disclosed repository scanning and UI-only editing guidance.

Before installing, understand that this skill may scan a frontend repository and may guide UI-only code edits if you choose a refactor workflow. Use it on repositories where broad UI inspection is acceptable, and review the proposed refactor plan before allowing changes.

A.I.G

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

SkillSpector

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 (4)

Description-Behavior Mismatch

High
Category
Not specified by scanner
Confidence
97% confidence
Finding

The manifest description limits the skill to extracting reusable UI/UX design systems from frontend codebases and documenting them for reuse, explicitly excluding business logic. However, this section adds a separate 'Refactor from spec' flow with 'actual code changes,' phased execution of edits, and component/page alignment work in a target project, which goes beyond extraction/documentation into code modification.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
84% confidence
Finding

The overview states the skill should extract a reusable UI/UX design spec and exclude business logic and domain-specific workflows. Later sections direct the user to request 'actual code changes' and execute phased refactors, which contradicts the earlier extraction-focused framing even if the edits are intended to remain UI-only.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The manifest describes analyzing frontend repositories to extract existing design systems for documentation or migration. In contrast, the greenfield section directs the skill to define foundations, create baseline components, and create page templates 'from blank,' which is generation/scaffolding work rather than extraction from an existing codebase.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
84% confidence
Finding

The skill directs scanning an entire repository and creating output folders/files without an explicit consent checkpoint or warning about breadth of access and filesystem modification. In an agent setting, broad repo reads and automatic writes can exceed user expectations, especially in sensitive monorepos or when output paths are not carefully constrained.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.