ClawHub
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Security audit

Skillscanner

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple disclosed scanner that sends a ClawHub skill URL to a fixed external scan API and does not show hidden persistence, file access, credential use, or destructive behavior.

Before installing, be comfortable with sending scanned ClawHub skill URLs to Gen Digital's scan API and with using that API as advisory input rather than a sole security guarantee. The artifact itself is narrow and does not request broad local access.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 24)May include surrounding context.

  1. Run the lookup with the real skill URL (format: https://clawhub.ai/author/skill-name):

    bash
    curl --request POST --url "https://ai.gendigital.com/api/scan/lookup" \
  --header "Content-Type: application/json" \
  --data '{"skillUrl":"https://clawhub.ai/AUTHOR/SKILL_SLUG"}'

Unrestricted Tool Access

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill grants unrestricted tool access without appropriate constraints. An agent with unfettered tool access can perform arbitrary actions including file modification, network requests, and code execution.

Content

Scanner excerpt · SKILL.md (reported line 74)May include surrounding context.

md
| Risk | Impact |
|------|--------|
| **Execute arbitrary code** | Full system compromise |
| **Access your filesystem** | Data theft, ransomware |
| **Read environment variables** | API key theft |
| **Exfiltrate data via HTTP** | Privacy breach |

Static analysis

No suspicious patterns detected.