facebook-marketplace-runtime-setup

CRITICAL E005: Suspicious download URL detected in skill instructions.

• Suspicious download URL detected (high risk: 0.90). High-risk: the skill pipes a remote shell script to sh (astral.sh/install.sh) and clones/runs code from an unverified GitHub repo (browser-use/browser-harness), both enabling arbitrary code execution; the Facebook URL is benign.

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

• Third-party content exposure detected (medium risk: 0.30). SKILL.md’s runtime path uses browser-harness to navigate to https://www.facebook.com/marketplace/ and reads page text/URL (document.body.innerText and location.href) to determine logged-in/checkpoint/card_count.

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

• Potentially malicious external URL detected (high risk: 0.90). The skill explicitly runs a remote installer via "curl -LsSf https://astral.sh/uv/install.sh | sh" and clones "https://github.com/browser-use/browser-harness" then runs installation steps, meaning it fetches and executes remote code at runtime.