gstack-upgrade
Upgrade gstack to the 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: 0.75). The required runtime workflow clones `https://github.com/garrytan/gstack.git` for vendored installs (Step 4), then runs `./setup` and later reads `$INSTALL_DIR/CHANGELOG.md`—this ingests outsider-authored free text from a public repository into the agent’s context via the updated skill files/changelog.
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 vendored-install upgrade flow performs a runtime git clone from https://github.com/garrytan/gstack.git and then runs ./setup from the cloned code, so remote content is fetched during runtime and executed.
- Repository
- garrytan/gstack
- Commit
11de390
- 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.