unused-css

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (medium risk: 0.30). The runtime workflow described in references/rule.md (e.g., DynamicPurgeCSS using Puppeteer and analyzeCSSCoverage) ingests free-form HTML/DOM text from attacker-influenced pages via page.goto(pageUrl) and interactions like page.click(interaction.selector) without requiring pre-selection of a specific trusted item.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.80). The GitHub Actions workflow in references/rule.md references external actions (actions/checkout@v4, actions/setup-node@v4, actions/github-script@v7) which are fetched from GitHub and executed during CI runtime, so the skill includes runtime external dependencies that execute remote code.