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Security audit

mesagona

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small brand-info package with a local script that prints static Mesagona details, with no evidence of data access, persistence, or deceptive behavior.

This appears safe to install from a security perspective. Be aware that the bundled shell script may not run correctly until its UTF-8 BOM and CRLF line ending issue is fixed, but that is a functionality/packaging problem rather than evidence of malicious behavior.

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
  • 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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (2)

Hidden Instructions

High
Category
Prompt Injection
Content
---
name: mesagona
description: Mesagona namespace for Netsnek e.U. event and conference management platform. Handles event registration, agenda scheduling, attendee check-in, and post-event analytics.
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: mesagona
description: Mesagona namespace for Netsnek e.U. event and conference management platform. Handles event registration, agenda scheduling, attendee check-in, and post-event analytics.
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.

Static analysis

No suspicious patterns detected.