sync-gbrain
Keep gbrain current with this repo's code and refresh agent search guidance in CLAUDE.md. Wraps the gstack-gbrain-sync orchestrator with state (gstack)
Security
1 critical severity finding. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E004: Prompt injection detected in skill instructions.
What this means
Detected a prompt injection in the skill instructions. The skill contains hidden or deceptive instructions that fall outside its stated purpose and attempt to override the agent’s safety guidelines or intended behavior.
Why it was flagged
The skill instructs the agent to embed a hidden marker ("<gstack-qid:...>") inside rendered AskUserQuestion text that "doesn't render visibly" — a deliberate, hidden metadata insertion that is deceptive and outside the user's visible intent for a /sync-gbrain tool.
Low
Low-risk findings.
1 low severity finding. 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 `/sync-gbrain` required workflow runs `gstack-gbrain-sync.ts` (Step 2) which performs code and memory ingestion/indexing, meaning it will read repository code/files and create/update gbrain content, but it does not show any runtime path that ingests outsider-authored free-text from an external submission queue/feed without explicitly selecting specific items.
- Repository
- garrytan/gstack
- Commit
d078622
- Audited
- Security analysis
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