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Security audit

Mailcheck

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple local Mailcheck reference helper that prints documentation and does not access credentials, network services, or persistent system settings.

This appears safe to install as a local reference skill. Be aware that some documentation is generic and the cheatsheet has a command naming mismatch, so users may need to run `debugging` rather than `troubleshooting`.

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
  • 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 (2)

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

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The cheatsheet lists troubleshooting as an essential command, but the dispatcher only implements debugging, not troubleshooting. This is an active documentation-to-code contradiction within the skill's own reference output and can mislead users about available functionality.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.