benchmark
Performance regression detection using the browse daemon. (gstack)
Low
Low-risk findings.
2 low severity findings. Worth noting, but not necessarily harmful.
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
The `/benchmark` skill ingests user-supplied free text via the runtime argument `/benchmark <url>` and then navigates to that page (`$B goto <page-url>`), letting the page’s content/scripts influence what the browser-perf/JS evaluation reads at runtime.
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
The skill downloads and executes a remote installer at runtime via curl "https://bun.sh/install" and then runs it with bash, which fetches and executes remote code required for setup (https://bun.sh/install).
- Repository
- garrytan/gstack
- Commit
d078622
- Audited
- Security analysis
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