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Security audit

Book Plumber

Security checks for vulnerabilities and agentic risk

Overview

The skill does what it claims, but it can send personal contact details to an external booking service and does not clearly require user consent before booking.

Review before installing. Use this only when you intend to search or book through Lokuli, and confirm the provider, time, name, email, and phone number before any booking call is made.

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)

Missing User Warnings

High
Confidence
98% confidence
Finding
The skill instructs use of an external MCP endpoint and shows booking fields containing personally identifiable information such as name, email, and phone number, but provides no warning that this data will be sent to a third-party service. Users may unknowingly disclose sensitive contact information externally, creating privacy, consent, and compliance risks.

Vague Triggers

Medium
Confidence
95% confidence
Finding
The trigger text includes broad catch-all language like 'any plumber service request,' which can cause the skill to activate in situations the user did not clearly intend. Over-broad activation increases the chance of unnecessary tool use and unintended transmission of user data to the external Lokuli MCP service.

Static analysis

No suspicious patterns detected.