Security Audit

NVIDIA/nurec-skills:skills/nurec-fixer

github.com/NVIDIA/nurec-skills

AI SkillCommit 11a93c05b4c8

CRITICAL

Scanned 5 days ago

Critical

Immediate action required

High

Priority fixes suggested

Medium

Best practices review

Low

Acknowledged / Tracked

Trust Assessment

NVIDIA/nurec-skills:skills/nurec-fixer received a trust score of 10/100, placing it in the Untrusted category. This skill has significant security findings that require attention before use in production.

SkillShield's automated analysis identified 5 findings: 2 critical, 3 high, 0 medium, and 0 low severity. Key findings include Arbitrary command execution, Dangerous call: subprocess.run(), Binary Python Cache File in Repository.

The analysis covered 4 layers: Manifest Analysis, Static Code Analysis, Dependency Graph, LLM Behavioral Safety. The Manifest Analysis layer scored lowest at 40/100, indicating areas for improvement.

Last analyzed on July 17, 2026 (commit 11a93c05). SkillShield performs automated 4-layer security analysis on AI skills and MCP servers.

Layer Breakdown

Manifest Analysis

40%

Static Code Analysis

70%

Dependency Graph

100%

LLM Behavioral Safety

85%

Behavioral Risk Signals

Filesystem Write

1 finding

Shell Execution

4 findings

Dynamic Code

1 finding

Security Findings5

Severity	Finding	Layer	Location
CRITICAL	Arbitrary command execution Python shell execution (os.system, subprocess) Review all shell execution calls. Ensure commands are static (not built from user input), use absolute paths, and are strictly necessary. Prefer library APIs over shell commands.	Manifest	skills/nurec-fixer/scripts/validate_setup.py:70
CRITICAL	Arbitrary command execution Python shell execution (os.system, subprocess) Review all shell execution calls. Ensure commands are static (not built from user input), use absolute paths, and are strictly necessary. Prefer library APIs over shell commands.	Manifest	skills/nurec-fixer/scripts/validate_setup.py:95
HIGH	Dangerous call: subprocess.run() Call to 'subprocess.run()' detected in function 'check_nvidia_runtime'. This can execute arbitrary code. Avoid using dangerous functions like exec/eval/os.system. Use safer alternatives.	Static	skills/nurec-fixer/scripts/validate_setup.py:70
HIGH	Dangerous call: subprocess.run() Call to 'subprocess.run()' detected in function 'check_gpu'. This can execute arbitrary code. Avoid using dangerous functions like exec/eval/os.system. Use safer alternatives.	Static	skills/nurec-fixer/scripts/validate_setup.py:95
HIGH	Binary Python Cache File in Repository A pre-compiled Python bytecode file (`scripts/__pycache__/validate_setup.cpython-312.pyc`) is committed to the repository. Binary files in source repositories pose a significant supply chain risk as they can contain compiled payloads or backdoors that do not match the corresponding source code, bypassing static analysis of `.py` files. Remove the `__pycache__` directory and all `.pyc` files from the repository. Add `*/__pycache__/` and `.pyc` to the project's `.gitignore` file to prevent them from being committed in the future.	LLM	scripts/__pycache__/validate_setup.cpython-312.pyc:1

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