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Security audit

docx

Security checks for vulnerabilities and agentic risk

Overview

This skill does what it says: it converts common document files to Markdown by running a local converter command on a user-provided file.

Install this if you want an agent to convert supported local documents with `markitdown`; avoid using it on confidential documents unless you trust the local converter and are comfortable with the file contents being read for conversion.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • 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 (1)

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
92% confidence
Finding

The skill invokes an external command on a user-supplied file path but does not warn the user that local files will be passed to a converter tool. Even with shell quoting present, the lack of disclosure can lead to unintended processing of sensitive local documents and reduces informed consent around tool execution.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.