direnv

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

• Third-party content exposure detected (high risk: 0.80). The skill's documentation (SKILL.md and references/stdlib-functions.md and troubleshooting.md) explicitly shows and instructs using source_url/fetchurl (including examples like sourcing raw.githubusercontent.com and other arbitrary https URLs) to download and source remote scripts into .envrc, which means untrusted public web content can be fetched and executed and thus materially influence environment/tool behavior.

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

• Potentially malicious external URL detected (high risk: 0.90). The skill includes an explicit .envrc/runtime example that calls source_url to download-and-source remote code at runtime — e.g. "https://raw.githubusercontent.com/nix-community/nix-direnv/2.3.0/direnvrc" — which would execute remote script code as a required fallback for Nix flake support.