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Security audit

Simple Excel

Security checks for vulnerabilities and agentic risk

Overview

This is a small spreadsheet-help skill whose local file read/write examples match its stated Excel and CSV purpose.

Before installing, understand that this skill is documentation-style guidance for pandas spreadsheet work. It may lead an agent to read local Excel/CSV files and write exported files, so use clear output filenames and avoid pointing exports at important existing files unless replacement is intended.

Vulnerability Patterns
  • 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
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • 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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (2)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill description and usage guidance are presented only in Chinese, which effectively forces a specific language for users. Under the policy, a language-specific constraint should either be optional for the user or explicitly documented and justified as region-specific.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
91% confidence
Finding

This markdown file includes file-writing examples using to_excel and to_csv, which can modify or overwrite files on disk. The surrounding documentation does not provide any warning or caution about affecting existing user data, so users may not realize the operation is state-changing.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.