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Security audit

Fibonacci Generator

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple Fibonacci math helper with no evidence of hidden access, persistence, network use, or unsafe behavior.

This appears safe to install for Fibonacci and related sequence help. Be aware that its trigger wording is broad enough that an agent might select it for nearby math topics, and extremely large requested sequence sizes could consume time or memory like any big-number calculation.

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

Low
Category
Not specified by scanner
Confidence
85% confidence
Finding

The manifest description says to use the skill when users 'need Fibonacci numbers,' 'calculate Fibonacci sequences,' or 'work with golden ratios and related mathematical sequences.' These triggers are broad and lack negative examples or clearer constraints, which could cause the skill to be selected for general math conversations beyond its intended scope.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.