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Security audit

Truthcheck

Security checks for vulnerabilities and agentic risk

Overview

This looks like a fact-checking CLI skill, but its install instructions fetch unpinned external packages that can change after review.

Install only after confirming the intended `truthcheck` package source and version. Prefer a pinned version or isolated environment, and provide API keys or local files only for checks you explicitly run.

A.I.G

Vulnerability Patterns
  • Insecure DependenciesIntroduces malicious components through unsafe dependency sources
  • 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
Findings (1)

T08 · Insecure Dependencies

Warning
Location
SKILL.md:17
Finding

Unpinned Third-Party Package Installation

Content
View full analysis
Remediation
View remediation

SkillSpector

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

Rp1

Medium
Category
MCP Rug Pull
Confidence
92% confidence
Finding

The skill recommends installing via npx clawhub install truthcheck without pinning a specific package/version, which can cause users to execute whatever version is current at install time. If the upstream package, dependency chain, or namespace is compromised, users could run attacker-controlled code during installation, and this risk is increased because npx fetches and executes packages directly.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.