ClawHub
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Security audit

Basic Plumbing Troubleshooting

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed DIY plumbing guidance skill with some install and persistence cautions, but no evidence of hidden or malicious behavior.

Before installing, consider running the installer in a least-privilege environment and verifying the `clawhub` CLI version or provenance. If you use the skill, only let it persist shut-off locations and repair notes you are comfortable storing, and treat plumbing emergencies, gas issues, electrical-adjacent water, and main-line backups as professional-service situations.

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:13
Finding

Unpinned CLI Dependency Executed During Installation

Content
View full analysis
Remediation
View remediation
install howtousehumans/basic-plumbing-troubleshooting" ``` 2. Verify the selected package version and its provenance before publishing the installation instruction. 3. Where supported, verify the downloaded package against a trusted integrity hash or signed release. 4. Use a lockfile and deterministic dependency installation for any maintained installer wrapper. 5. Run installation with least privilege in a restricted environment that does not expose unrelated credentials, sensitive files, or privileged sockets. 6. Avoid running the installer with `sudo`, as an administrator, or from a privileged CI account. 7. Periodically re-audit the pinned CLI before intentionally updating the version. ]]>

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 (2)

Rp1

Medium
Category
MCP Rug Pull
Confidence
90% confidence
Finding

The install command invokes npx clawhub without pinning a specific version, which allows the fetched package version to change over time. If the upstream package is compromised or a malicious version is published, users installing the skill could execute untrusted code during installation.

Content

No source excerpt is available for this finding.

Vague Triggers

Low
Category
Not specified by scanner
Confidence
78% confidence
Finding

The description says to use the skill when someone 'has a clogged sink or toilet, running toilet, dripping faucet, or minor leak and wants to fix it themselves,' but it does not define any explicit trigger phrases, exclusions, or boundaries. In a markdown skill description, this kind of broad natural-language scope can overlap with ordinary conversation about household issues and may cause unintended invocation.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.