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Security audit

Book Extensions

Security checks for vulnerabilities and agentic risk

Overview

This is a simple third-party booking skill, but it can create appointments using personal contact details without clear consent or confirmation guidance.

Review this skill before installing if you are comfortable with an agent contacting Lokuli to search and book extensions services. Use it only when you explicitly want booking help, and confirm the provider, time slot, and personal contact details before allowing a booking request to be sent.

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
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill description says it should trigger on essentially any 'extensions service request,' which is overly broad and can cause the agent to invoke this external booking workflow in contexts the user did not clearly intend. Because the skill connects to a third-party MCP endpoint and supports booking operations, over-invocation increases the chance of unnecessary data sharing, unintended service actions, or user confusion about where their request is being sent.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The create_booking example includes personal data fields such as name, email, and phone number, but the documentation does not warn that this information will be transmitted to an external service. In a booking skill, omission of this notice can lead to users or downstream agents sharing personally identifiable information without informed consent or minimal-data handling safeguards.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.