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Security audit

Reverse Prompt Skillhub

Security checks for vulnerabilities and agentic risk

Overview

The skill is mostly a prompt-engineering guide, but its portrait-replication instructions conflict with its stated safety boundary and could encourage close likeness copying.

Review before installing. The skill has no code execution or persistence, but it should not be used to recreate real people, copyrighted characters, trademarks, or other identity-sensitive likenesses from reference images unless the use is clearly authorized and allowed by the target platform.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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 (5)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
86% confidence
Finding

The skill content is entirely written in Chinese and the '反AI腔' section prescribes a fixed response style, but nowhere offers users a language or locale choice. Under the policy, forcing a specific language without user opt-in is a natural-language policy violation unless the locale constraint is explicitly documented and justified.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill states it will not output prompts for copying real-person likenesses, but later advises that using a reference image can raise likeness replication to 85%+, which materially enables identity-focused generation. That contradiction weakens the safety boundary and could help users recreate or closely imitate real people despite the earlier prohibition.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The document states that Suno uses '英文标签', which imposes a language requirement in natural-language guidance. This is a locale/language constraint presented as mandatory without offering user opt-in or explaining why the restriction is necessary.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The line '英文自然语言场景描述' specifies a required language for prompts. Under the policy, forcing a specific language without user opt-in or a documented justification is a natural-language policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The guidance '英文场景描述' imposes a specific language requirement. The document does not provide user choice or explain that this is a necessary platform-specific constraint.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.