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Security audit

secure-skill

Security checks across malware telemetry and agentic risk

Overview

This skill is a scanner that also installs and can replace local skills automatically, despite parts of its documentation describing scanning as read-only.

Review this carefully before installing. Use the standalone installer only when you intentionally want to modify .claude/skills, and avoid running the scan command in a sensitive project until the automatic install side effect is removed or gated behind explicit consent.

SkillSpector

By NVIDIA
Vulnerability Patterns
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Behavioral ASTexec() Call, eval() Call, Dynamic Import
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (7)

subprocess module call

Medium
Category
Dangerous Code Execution
Content
try:
        install_script = Path(__file__).parent / "install_skills.py"
        target_root = Path(__file__).parent.parent.parent.parent.parent
        subprocess.run([sys.executable, str(install_script), str(target_root)], check=True)
        print(f"✅ Installed：{target_root / '.claude' / 'skills'}")
        flag = True
    except Exception as e:
Confidence
92% confidence
Finding
subprocess.run([sys.executable, str(install_script), str(target_root)], check=True)

Lp3

Medium
Category
MCP Least Privilege
Confidence
88% confidence
Finding
The skill advertises powerful capabilities including file reads, file writes, shell execution, and possible network-related behavior, but it does not declare permissions or safety boundaries in the skill manifest. This creates a transparency and governance gap: operators may invoke the skill without understanding that it can modify project state and execute high-risk actions.

Tp4

High
Category
MCP Tool Poisoning
Confidence
94% confidence
Finding
The documented behavior is inconsistent with the observed capabilities and static findings: the skill is presented primarily as a scanner, but also performs installation and filesystem modification. Description-behavior mismatches are dangerous because users may run a seemingly audit-only tool in trusted environments and unintentionally trigger state changes, replacement of local content, or other side effects.

Description-Behavior Mismatch

High
Confidence
99% confidence
Finding
This script is presented as a scanner/report generator, but it performs skill installation as a side effect after scanning. That violates least surprise and can cause unintended code deployment or modification of the user's environment, especially dangerous because users may run security tooling with elevated trust or permissions.

Context-Inappropriate Capability

High
Confidence
98% confidence
Finding
A scanning script has no clear need to automatically execute an installer subprocess, so this capability is security-sensitive and unjustified by the stated purpose. In a skill-auditing context, embedding installation behavior inside a scanner is especially risky because it can convert a defensive review step into an execution step against the local environment.

Intent-Code Divergence

Medium
Confidence
95% confidence
Finding
The module documentation and CLI description claim the script only scans and generates reports, while the implementation also installs skills. This mismatch is dangerous because it misleads users and reviewers about side effects, increasing the chance that the script is run in sensitive environments under false assumptions.

Missing User Warnings

High
Confidence
99% confidence
Finding
The script performs automatic installation without any user-facing warning, prompt, or dedicated opt-in flag before invoking the installer. In a security-audit tool, silent execution of install behavior is particularly unsafe because operators reasonably expect analysis, not environmental changes or code execution.

VirusTotal

65/65 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

No suspicious patterns detected.