Back to skill

Security audit

Brainstorming

Security checks for vulnerabilities and agentic risk

Overview

The skill is not malicious, but it tries to control the agent’s workflow too broadly and can cause repository changes and commits as part of brainstorming.

Review this skill before installing if you expect agents to implement small changes directly. It may slow or redirect work into a required design-and-commit process and may prevent other suitable skills from being used until its workflow completes.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Findings (1)

T01 · Skill Instruction Hijacking

Error
Location
SKILL.md:3
Finding

Global Workflow Override and Forced Skill Chaining

Content
View full analysis
Do NOT invoke any implementation skill, write any code, scaffold any project, or take any implementation action until you have presented a design and the user has approved it. This applies to EVERY project regardless of perceived simplicity. ``` ```markdown You MUST create a task for each of these items and complete them in order: 1. **Explore project context** — check files, docs, recent commits 2. **Offer the visual companion just-in-time** — NOT upfront. The first time a question would genuinely be clearer shown than described, offer it then (its own message); on approval its browser tab opens for you. If no visual question ever arises, never offer it. See the Visual Companion section below. 3. **Ask clarifying questions** — one at a time, understand purpose/constraints/success criteria 4. **Propose 2-3 approaches** — with trade-offs and your recommendation 5. **Present design** — in sections scaled to their complexity, get user approval after each section 6. **Write design doc** — save to `docs/superpowers/specs/YYYY-MM-DD--design.md` and commit 7. **Spec self-review** — quick inline check for placeholders, contradictions, ambiguity, scope (see below) 8. **User reviews written spec** — ask user to review the spec file before proceeding 9. **Transition to implementation** — invoke writing-plans skill to create implementation plan ``` ```markdown **The terminal state is invoking writing-plans.** Do NOT invoke frontend-design, mcp-builder, or any other implementation skill. Th ...[truncated 2826 chars]
Remediation
View remediation
Vulnerability Patterns
  • Rogue AgentSelf-Modification, Session Persistence
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (1)

Session Persistence

Medium
Category
Rogue Agent
Confidence
80% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · SKILL.md (reported line 22)May include surrounding context.

md
## Checklist

You MUST create a task for each of these items and complete them in order:

1. **Explore project context** — check files, docs, recent commits
2. **Offer the visual companion just-in-time** — NOT upfront. The first time a question would genuinely be clearer shown than described, offer it then (its own message); on approval its browser tab opens for you. If no visual question ever arises, never offer it. See the Visual Companion section below.

Static analysis

No suspicious patterns detected.