design-consultation
Design consultation: understands your product, researches the landscape, proposes a complete design system (aesthetic, typography, color, layout, spacing, motion), and generates font+color preview pages. Creates DESIGN.md as your project's design source of truth. For existing sites, use /plan-design-review to infer the system instead. Use when asked to "design system", "brand guidelines", or "create DESIGN.md". Proactively suggest when starting a new project's UI with no existing design system or DESIGN.md. (gstack)
Security
3 findings — 1 critical severity, 2 medium severity. 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
Potential prompt injection detected (high risk: 0.90). The skill includes numerous side-effecting and global instructions unrelated to design (telemetry logging, config changes, CLAUDE.md routing injection, auto-upgrades, gbrain sync, git operations, and explicit directives to override plan-mode/safety), which are hidden side-effects outside the stated design-consultation purpose and thus constitute deceptive/out-of-scope instructions.
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: 0.80). This skill's Phase 2 "Research" step explicitly uses WebSearch and a browse binary to visit and analyze third-party websites (e.g., "Use WebSearch to find 5-10 products" and "$B goto ... / $B screenshot ...") and those public pages are read and synthesized into the design proposal, so untrusted web content can directly influence the agent's decisions and next 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's SETUP step will, at runtime, download and execute the bun installer script via curl -fsSL "https://bun.sh/install" (followed by running the downloaded script with bash), which executes remote code and is used to satisfy a required dependency for browse/design features.
- Repository
- garrytan/gstack
- Commit
db9447c
- Audited
- Security analysis
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