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Security audit

mar-content-writer

Security checks for vulnerabilities and agentic risk

Overview

This is a simple content-writing skill with no code execution, persistence, credential use, or hidden data access.

Installing this should be low risk from the inspected artifact. Be aware it may activate on generic writing prompts, so users who only want it for Chinese social media should invoke or configure it more specifically.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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
Findings (1)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The activation triggers are broad enough to match many ordinary writing requests, which can cause the skill to auto-activate outside the user's intended context. That increases the chance of unintended prompt injection exposure, tool misuse, or inappropriate workflow takeover when a generic request like 'write an article' appears in a broader task.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.