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SkillSpector · fal-ai

independent scanner by NVIDIA · skill by kbarbel640-del · how it works ↗

FAILmax severity: CRITICALrisk score: 88

subprocess module calls execute external commands. Without careful input validation, this enables command injection.; Data from a source is assigned to a variable that is later passed to a sink, creating a variable-mediated taint flow.; Without declared permissions the skill's intent is opaque and cannot be validated.; +3 more

scanned 2026-08-22

Findings (7)

MEDIUMDangerous Code Executionconfidence: 0.7

subprocess module calls execute external commands. Without careful input validation, this enables command injection.

scripts/fal_client.py

MEDIUMData Flowconfidence: 0.65

Data from a source is assigned to a variable that is later passed to a sink, creating a variable-mediated taint flow.

scripts/fal_client.py

MEDIUMMCP Least Privilegeconfidence: 0.7

Without declared permissions the skill's intent is opaque and cannot be validated.

SKILL.md

HIGHData Exfiltrationconfidence: 0.7

Code accesses environment variables that may contain secrets (API keys, tokens). This is a common pattern for credential theft.

scripts/fal_client.py

HIGHOutput Handlingconfidence: 0.95

Model output is used without validation or sanitization. Unvalidated output injected into downstream contexts (SQL, shell, HTML) enables injection attacks and arbitrary code execution.

scripts/fal_client.py

MEDIUMTool Misuseconfidence: 0.8

Tool defaults are unsafe or overly permissive (e.g. disabled TLS verification, no authentication, world-writable permissions). Unsafe defaults widen the attack surface.

scripts/fal_client.py

MEDIUMTool Misuseconfidence: 0.8

Tool defaults are unsafe or overly permissive (e.g. disabled TLS verification, no authentication, world-writable permissions). Unsafe defaults widen the attack surface.

scripts/fal_client.py

What the verdicts mean

SkillSpector reports on SkillMD's shared five-tier scale. See how SkillSpector works ↗.

PASS

Overall severity LOW (risk score in the safe range)

CAUTION

Overall severity MEDIUM

WARNING

Overall severity HIGH

FAILthis skill

Overall severity CRITICAL

INCONCLUSIVE

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