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Security audit

Js Compiler

Security checks for vulnerabilities and agentic risk

Overview

This skill appears to be a harmless local reference stub, though its JS compiler content is mostly generic.

Installing this skill should not grant meaningful security-sensitive capability based on the inspected files. Treat it as a low-risk but low-value reference stub, and do not rely on it for accurate JS compiler guidance without checking better documentation.

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
Vulnerability Patterns
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (3)

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · scripts/script.sh (reported line 64)May include surrounding context.

sh
## Prerequisites
- Basic understanding of devtools concepts
- Required tools and access credentials
- System meeting minimum requirements

## Installation

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The header comment states the script is for working with JS compiler in devtools contexts. However, the command outputs consist of boilerplate text that discusses generic infrastructure and operational topics instead of JS compiler behavior, syntax, patterns, or implementation guidance.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The manifest promises quick lookup for JS Compiler concepts, best practices, and implementation patterns. The script only prints broad placeholder documentation about networking, credentials, migration, and generic devtools operations, with no substantive JS compiler-specific reference material.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.