gstack-upgrade

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

• Third-party content exposure detected (high risk: 0.85). Outsider free text is fetched at runtime from the public GitHub repository during vendored upgrades (git clone --depth 1 https://github.com/garrytan/gstack.git ...), and the skill then reads CHANGELOG.md from that downloaded content into the LLM context for “Show What’s New”.

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

• Potentially malicious external URL detected (high risk: 1.00). The vendored-install flow runs "git clone --depth 1 https://github.com/garrytan/gstack.git" at runtime and then executes ./setup from the fetched repo, meaning it fetches and executes remote code from that URL which the upgrade relies on.