Security Audit

snyk/agent-scan:tests/skills/xlsx

github.com/snyk/agent-scan

AI SkillCommit 30a672c5e8ce

CRITICAL

Scanned 29 days ago

Critical

Immediate action required

High

Priority fixes suggested

Medium

Best practices review

Low

Acknowledged / Tracked

Trust Assessment

snyk/agent-scan:tests/skills/xlsx 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 6 findings: 3 critical, 3 high, 0 medium, and 0 low severity. Key findings include Arbitrary command execution, Dangerous call: subprocess.run().

The analysis covered 4 layers: Manifest Analysis, Static Code Analysis, Dependency Graph, LLM Behavioral Safety. The Manifest Analysis layer scored lowest at 10/100, indicating areas for improvement.

Last analyzed on March 1, 2026 (commit 30a672c5). SkillShield performs automated 4-layer security analysis on AI skills and MCP servers.

Layer Breakdown

Manifest Analysis

10%

Static Code Analysis

55%

Dependency Graph

100%

LLM Behavioral Safety

100%

Behavioral Risk Signals

Shell Execution

6 findings

Security Findings6

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	tests/skills/xlsx/recalc.py:32
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	tests/skills/xlsx/recalc.py:86
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	tests/skills/xlsx/recalc.py:94
HIGH	Dangerous call: subprocess.run() Call to 'subprocess.run()' detected in function 'recalc'. This can execute arbitrary code. Avoid using dangerous functions like exec/eval/os.system. Use safer alternatives.	Static	tests/skills/xlsx/recalc.py:94
HIGH	Dangerous call: subprocess.run() Call to 'subprocess.run()' detected in function 'setup_libreoffice_macro'. This can execute arbitrary code. Avoid using dangerous functions like exec/eval/os.system. Use safer alternatives.	Static	tests/skills/xlsx/recalc.py:32
HIGH	Dangerous call: subprocess.run() Call to 'subprocess.run()' detected in function 'recalc'. This can execute arbitrary code. Avoid using dangerous functions like exec/eval/os.system. Use safer alternatives.	Static	tests/skills/xlsx/recalc.py:86

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