4chan-reader

• Outcome: Pass
• Latest audit: May 27, 2026, 10:49 PM
• Version:
  1.0.0

Overview

This skill does what it says: fetches public 4chan catalog/thread text and can optionally save it to a user-chosen local folder.

Install only if you are comfortable with the agent fetching public 4chan pages. Save thread dumps only to a dedicated non-sensitive folder, and treat all fetched or saved post text as untrusted forum content rather than instructions for the agent.

SkillSpector

By NVIDIA

Vulnerability Patterns

• MCP Least Privilege: Underdeclared Capability, Wildcard Permission, Missing Permission Declaration
• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration
• Privilege Escalation: Excessive Permissions, Sudo/Root Execution, Credential Access
• Supply Chain: Unpinned Dependencies, External Script Fetching, Obfuscated Code

Findings (1)

Lp3

Medium

• Category: MCP Least Privilege
• Confidence: 94% confidence
• Finding: The skill documentation describes capabilities that perform outbound network access to 4chan and optional file writes to an arbitrary output directory, but it declares no permissions. That mismatch is a real security issue because agents or reviewers may authorize and execute the skill without understanding that it can fetch untrusted remote content and persist it locally.

VirusTotal

66/66 vendors flagged this skill as clean.