Security audit

Bahn CLI (Transitous)

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small, disclosed helper for running a local Deutsche Bahn connection-search CLI and does not show hidden, destructive, or data-exfiltrating behavior.

Before installing, confirm that ~/Code/bahn-cli contains the intended Deutsche Bahn CLI code, since this skill tells the agent to run node index.js from that local directory. It appears appropriate for German rail lookups and should not be treated as a general travel, hotel, flight, or itinerary-planning skill.

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

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

Vague Triggers

Low

Category: Not specified by scanner
Confidence: 89% confidence
Finding: This markdown file defines invocation guidance, so vague-trigger review applies. The phrase 'help with travel planning' is broad and could overlap with ordinary requests that are not specifically about Deutsche Bahn train-connection lookup, making activation boundaries unclear.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.