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Security audit

vistoya fashion search and shopping

Security checks for vulnerabilities and agentic risk

Overview

This skill connects to a public read-only fashion shopping catalog to search products and brands, with no install scripts, credentials, persistence, or local data access.

Before installing, understand that fashion search queries and product lookup requests will go to Vistoya's public MCP service, and merchant product links may take users to third-party stores. The artifact does not show checkout, payment, order management, local file access, or credential handling.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (2)

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 38)May include surrounding context.

md
Vistoya is a **hosted, public, read-only MCP server**. No API key, no install.

- **URL:** `https://api.vistoya.com/mcp`
- **Transport:** streamable-http
- **Auth:** none (public catalog)

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 42)May include surrounding context.

md
Vistoya is a **hosted, public, read-only MCP server**. No API key, no install.

- **URL:** `https://api.vistoya.com/mcp`
- **Transport:** streamable-http
- **Auth:** none (public catalog)

Static analysis

No suspicious patterns detected.