gstack-upgrade
Upgrade gstack to the latest version. Detects global vs vendored install, runs the upgrade, and shows what's new. Use when asked to "upgrade gstack", "update gstack", or "get latest version".
Security
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
W011: Third-party content exposure detected (indirect prompt injection risk)
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
Third-party content exposure detected (high risk: 1.00). The skill explicitly clones from the public GitHub repo (git clone https://github.com/garrytan/gstack.git in Step 4 for vendored installs) and runs ./setup and later reads $INSTALL_DIR/CHANGELOG.md (Step 6), so it fetches and ingests untrusted, third‑party content that can directly change behavior and influence subsequent actions.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.90). The skill performs a runtime git clone from https://github.com/garrytan/gstack.git (and also runs git fetch/reset on installed git checkouts) and then runs the repository's ./setup, which fetches and executes remote code during the upgrade process — this remote content can directly control behavior or execute arbitrary code.
- Repository
- garrytan/gstack
- Commit
91bea06
- Audited
- Security analysis
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.