ClawHub
Back to skill

Security audit

Url Images To Pdf

Security checks across malware telemetry and agentic risk

Overview

The skill appears intended to convert webpage images into a PDF, but its URL handling can execute unintended local shell commands if given a crafted URL.

Review before installing. Use only with URLs you fully trust, and prefer a patched version that fetches pages through a native HTTP client or execFile/spawn argument arrays with URL validation, timeouts, and overwrite protection.

SkillSpector

By NVIDIA
Vulnerability Patterns
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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)

Lp3

Medium
Category
MCP Least Privilege
Confidence
89% confidence
Finding
The skill explicitly instructs the user to execute a local Node.js script via shell (`node .../extract.js <URL>`), but the skill metadata does not declare the shell capability/permission. This creates a transparency and policy gap: a caller or platform may treat the skill as low-risk while it actually requires command execution and network-driven processing of untrusted URLs.

VirusTotal

64/64 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

Detected: suspicious.dangerous_exec

Shell command execution detected (child_process).

Critical
Code
suspicious.dangerous_exec
Location
extract.js:59