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Security audit

markdown-to-minimal-image

Security checks for vulnerabilities and agentic risk

Overview

This is a straightforward Markdown-to-image helper with only minor notes about language defaults and local image caching.

Before installing, be aware that the skill will read the Markdown file you provide, send its summarized content into image generation, and save the resulting image locally in a Hermes cache path. Avoid using sensitive documents unless that processing and local retention are acceptable.

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 (3)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The instruction says that if the document is in Simplified Chinese, all output must be in Simplified Chinese, and if English, all output must be in English. This is a language policy constraint imposed automatically, with no option for the user to request a different output language.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

This requirement mandates that generated image text match the source document language exactly, limiting user control over language or locale. Because no override or opt-in is provided, it constitutes a natural-language policy issue.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
89% confidence
Finding

This markdown skill explicitly states that it will save output to $HOME/.hermes/cache/{date}-{subject}.png, which affects the user's filesystem. The description does not clearly warn the user about local file creation or retention implications beyond listing the output path.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.