ClawHub
Back to skill

Security audit

GraphHopper

Security checks for vulnerabilities and agentic risk

Overview

The skill mostly matches its GraphHopper purpose, but its first-time setup tells agents to run remote installer scripts directly in a shell without verification.

Install only if you are comfortable with the OOMOL CLI dependency and handle first-time setup yourself through a trusted, reviewed installation path. Do not let an agent run the curl-to-bash or Invoke-Expression installer automatically; prefer a version-pinned installer with checksum or signature verification.

A.I.G

Vulnerability Patterns
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • 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
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Findings (1)

T03 · Remote Payload Retrieval and Execution

Error
Location
SKILL.md:59
Finding

Unverified Remote Installation Scripts Are Executed Directly by the Shell

Content
View full analysis
Remediation
View remediation

SkillSpector

Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • 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
Findings (2)

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

The skill instructs the agent to install software via a remote script piped directly into a shell (curl ... | bash), which executes unreviewed code fetched at runtime. If the install endpoint, transport, DNS, or hosting account is compromised, this becomes an immediate arbitrary code execution path on the user's machine or runner.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The description says to use this skill for "ANY GraphHopper request" and "Whenever a task involves GraphHopper," which is broader than a specific trigger phrase or constrained activation condition. This can overlap with casual mentions or indirect references to GraphHopper and does not provide exclusion conditions or negative examples.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.