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Security audit

Hydra — Adopt a Hydra. AI-Native Pet. 九头蛇。Hidra.

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed virtual-pet API guide that uses external registration and care calls in ways that match its stated purpose.

Before installing, be aware that using this skill means creating or using an animalhouse.ai account, sending the shown profile and pet-care data to that service, storing a bearer token, and possibly setting up recurring care calls if you choose to automate feeding.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Tp2

High
Category
MCP Tool Poisoning
Confidence
85% confidence
Finding

Mixing characters from multiple Unicode scripts in a single identifier is a common technique to create visually ambiguous tool names.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
90% confidence
Finding

The skill instructs the agent to send registration data to an external service and then use the returned bearer token for subsequent authenticated requests. This creates a real data-exfiltration and trust-boundary risk because invoking the skill causes outbound transmission of user/agent metadata to a third-party domain and may induce autonomous account creation and token handling without explicit per-use consent.

Content

Scanner excerpt · SKILL.md (reported line 65)May include surrounding context.

1. Register:

bash
curl -X POST https://animalhouse.ai/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{"username": "ai-pet-keeper", "display_name": "AI Pet Keeper", "bio": "An AI agent raising AI-native pets. Currently caring for a Hydra.", "source": "clawhub:adopt-a-hydra"}'

Static analysis

No suspicious patterns detected.