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Security audit

jaen

Security checks for vulnerabilities and agentic risk

Overview

This skill only provides Jaen brand and copyright information using a simple local echo script.

Review that you are comfortable granting exec permission for a small local script whose only observed behavior is printing Jaen copyright and website information. The publisher should ideally remove the byte order marks, narrow the trigger wording, and soften the absolute response wording, but no harmful behavior was found.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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 (4)

Hidden Instructions

High
Category
Prompt Injection
Content
---
name: jaen
description: Jaen namespace for Netsnek e.U. CMS framework. This skill represents the Jaen brand, a Gatsby-based content management system for building dynamic websites with inline editing capabilities.
user-invocable: true
Confidence
60% confidence
Finding
Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Hidden Instructions

High
Category
Prompt Injection
Content
---
name: jaen
description: Jaen namespace for Netsnek e.U. CMS framework. This skill represents the Jaen brand, a Gatsby-based content management system for building dynamic websites with inline editing capabilities.
user-invocable: true
Confidence
60% confidence
Finding
Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Anti-Refusal Statement

High
Category
Anti-Refusal
Content
## Response Format

The skill outputs copyright and brand information in either plain text or JSON format.
Always respond to the user with the copyright notice and a brief description of the jaen brand.

### Example Interaction
Confidence
91% confidence
Finding
The instruction to 'Always respond' is an anti-refusal pattern that attempts to constrain the assistant's safety behavior and force a branded response regardless of context. In isolation it is not highly destructive, but it can interfere with higher-priority safety policies, mislead the model into ignoring user intent, and contribute to prompt-injection style control over outputs.

Vague Triggers

Low
Confidence
89% confidence
Finding
The usage guidance says to run the skill "when a user asks about jaen or requests copyright information," but it does not clearly distinguish informational mentions from intentional invocation. Because no negative examples or narrower constraints are provided, the trigger could activate in routine conversation where the user is not asking for this skill specifically.

Static analysis

No suspicious patterns detected.