Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md ./scripts/setup-breakdown.sh status
Security audit
Breakdown Connectivity
Security checks for vulnerabilities and agentic risk
Overview
This skill is a disclosed macOS connectivity diagnostic and setup helper for Breakdown, with expected local installation and MCP configuration behavior.
Install only if you want Breakdown installed and connected to Codex or Claude Code. Review before running install or configure commands, because they can add a persistent local app and MCP client entry.
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
- Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
- MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
- Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
- Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
- Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (8)
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md ./scripts/setup-breakdown.sh status
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md ./scripts/setup-breakdown.sh status
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md ./scripts/setup-breakdown.sh status
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md ./scripts/setup-breakdown.sh status
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md ./scripts/setup-breakdown.sh status
Undeclared Tool Scope
Medium
- Category
- MCP Least Privilege
- Confidence
- 85% confidence
- Finding
The skill instructs the agent to run local shell commands, including an install helper that downloads and installs software and modifies MCP client configuration, but it declares no explicit tool scope or allowed-tools restrictions. That creates unnecessary privilege ambiguity: an agent may invoke shell in environments where such access was not intended, increasing the chance of unauthorized system changes or risky command execution during normal skill use.
- Content
External Transmission
Medium
- Category
- Data Exfiltration
- Confidence
- 70% confidence
- Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
- Content
sh } trap cleanup_download EXIT HUP INT TERM curl --fail --location --silent --show-error --proto '=https' --tlsv1.2 \ --output "$temporary_path" "$DOWNLOAD_URL" verify_package "$temporary_path" mv "$temporary_path" "$output_path"