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Security audit

MJ Prompt Pro

Security checks for vulnerabilities and agentic risk

Overview

This is a narrow Midjourney prompt-writing skill with no code, tools, persistence, or sensitive access.

Before installing, expect this skill to produce structured Midjourney prompts in English even when the surrounding interaction is Chinese. It does not appear to run code or access private data.

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
  • 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 (1)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The markdown explicitly states '提示词必须使用英文' ('the prompt must use English') as a mandatory requirement. This is a language-policy constraint presented without any user choice or opt-in, which fits the natural-language policy violation category for forced language/locale behavior.

Content

No source excerpt is available for this finding.