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Security audit

fable-method

Security checks for vulnerabilities and agentic risk

Overview

This is a plain reasoning-workflow skill with broad but disclosed activation guidance and no executable code or hidden persistence.

Install this if you want agents to apply a disciplined verification workflow to non-trivial work. Be aware it may be invoked frequently for multi-step tasks, which can add process and tool use, but the artifact does not show hidden code execution, credential handling, or persistence.

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
Confidence
97% confidence
Finding
The skill explicitly says it should be used proactively for 'any multi-step task that no task-specific skill covers,' which is a broad activation rule that can cause it to intercept many normal tasks. While the content is framed as a reasoning discipline rather than overtly malicious behavior, broad auto-activation can override narrower task routing, increase unintended tool use, and make downstream actions more likely without the user explicitly requesting this skill.

Static analysis

No suspicious patterns detected.