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Security audit

javascript-pro

Security checks for vulnerabilities and agentic risk

Overview

This is a JavaScript guidance skill with examples and best practices, and it does not contain hidden execution, persistence, credential handling, or data exfiltration behavior.

Install this if you want a broad JavaScript coding helper. Be aware that it may be invoked for many JavaScript-adjacent tasks because its description is general, so review generated code normally before running it, especially examples involving network requests, storage, workers, or delete actions.

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
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill description is very broad and can cause the agent to invoke this skill for a wide range of JavaScript-related tasks without clear boundaries. Overly generic activation criteria increase the chance of inappropriate routing, which can expose unrelated user data or cause the skill to be used in contexts it was not intended to handle.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.