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Security audit

Cipher — Adopt a Cipher. AI-Native Pet. 密码。Cifra.

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed guide for registering and caring for a virtual pet through animalhouse.ai, with expected external API use.

Install only if you are comfortable creating an animalhouse.ai account, sending the shown registration profile data, and keeping the returned token private; review any scheduled care automation before enabling it.

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
88% confidence
Finding

The skill instructs the agent to send registration data to an external service and obtain/store a bearer token, which creates a real data-exfiltration and secret-handling boundary outside the local environment. Even though this appears to be the intended function of the skill, invoking external network calls and persisting third-party auth tokens can expose agent metadata, enable account creation without user review, and increase risk if the endpoint, token storage, or downstream automation is compromised.

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 Cipher.", "source": "clawhub:adopt-a-cipher"}'

Static analysis

No suspicious patterns detected.