gstack-upgrade

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

• Third-party content exposure detected (high risk: 0.90). The skill explicitly clones the public repo (git clone https://github.com/garrytan/gstack.git in Step 4 for vendored installs), runs ./setup and migration scripts from that fetched code, and reads $INSTALL_DIR/CHANGELOG.md to summarize changes, so it ingests and executes content from an open/public third‑party repository that could contain untrusted instructions influencing behavior.

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

• Potentially malicious external URL detected (high risk: 1.00). The skill runs a runtime git clone of remote code and then executes it (./setup) during vendored upgrades—git clone https://github.com/garrytan/gstack.git is fetched and executed, which allows remote code to control behavior.