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Security audit

Seoul Subway

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed Seoul Subway lookup helper that calls a stated proxy for transit queries and does not include local code, persistence, or credential handling.

Installers should be comfortable with transit queries being sent to the disclosed proxy service and should only choose a persistent allow option for that domain if they trust the proxy. The visible model setting may influence which model runs the skill, but no malicious or high-impact local behavior was found.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (1)

External Model or Provider Selection

Medium
Category
Excessive Agency
Confidence
90% confidence
Finding

Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.

Content

Scanner excerpt · SKILL.md (reported line 4)May include surrounding context.

md
---
name: seoul-subway
description: Seoul Subway assistant for real-time arrivals, route planning, and service alerts (Korean/English)
model: sonnet
metadata: {"moltbot":{"emoji":"🚇"}}
homepage: https://github.com/dukbong/seoul-subway
user-invocable: true

Static analysis

No suspicious patterns detected.