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Security audit

Homey - Home Automation

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed Homey smart-home CLI guide with expected token storage and user-directed device controls, though users should recognize it can affect real devices.

Install only if you intend to let an agent control your Homey devices. Review which Homey app credentials you provide, protect the local token files, and be careful with flow triggers because flows may perform broader home automation actions than a single device command.

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
Vulnerability Patterns
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Rogue AgentSelf-Modification, Session Persistence
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · SKILL.md (reported line 124)May include surrounding context.

md
## Configuration Storage

- **Tokens**: `~/.config/homey-cli/credentials.json`
- **Active Homey**: `~/.config/homey-cli/config.json`

## Troubleshooting

Session Persistence

Medium
Category
Rogue Agent
Confidence
60% 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 27)May include surrounding context.

npm install

text

### 2. Create Homey App Credentials

1. Go to https://tools.developer.homey.app/tools/app
2. Create a new app with:

Static analysis

No suspicious patterns detected.