ClawHub
Back to skill

Security audit

Book Language Tutor

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent tutor-booking integration, but it can send contact details and create bookings through an external service without clearly requiring explicit confirmation.

Review before installing. Use it only when you intentionally want an agent to search for and book language tutoring through Lokuli, and avoid providing name, email, phone, or appointment details until you are ready for that information to be sent to the external booking service.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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)

Vague Triggers

Medium
Confidence
95% confidence
Finding
The trigger description is broad enough to activate on generic service-seeking requests, increasing the chance the agent invokes this skill outside a narrowly intended booking context. That can lead to unnecessary interaction with an external MCP endpoint and unintended collection or transmission of user data for users who only wanted information or recommendations.

Missing User Warnings

Medium
Confidence
97% confidence
Finding
The skill includes a booking flow that sends personal contact details such as name, email, and phone number to a third-party MCP service, but it does not warn the user about this external transmission. In the context of a booking skill, this omission is significant because users may provide sensitive personal data without informed consent or understanding of where it is being sent.

Static analysis

No suspicious patterns detected.