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Security audit

Error

Security checks for vulnerabilities and agentic risk

Overview

This is a simple error-handling reference skill whose script prints static guidance and does not access files, credentials, or the network.

Installers should understand this skill runs a local bash helper to print reference material. The main improvement would be clearer permission metadata and removal or correction of the unused ERROR_DIR configuration note, but the inspected artifact does not show data collection, network access, or hidden mutation.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
70% confidence
Finding

Without declared permissions the skill's intent is opaque and cannot be validated.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · scripts/script.sh (reported line 415)May include surrounding context.

sh
API Error Response Format (RFC 7807 — Problem Details):
  {
    "type": "https://api.example.com/errors/insufficient-funds",
    "title": "Insufficient Funds",
    "status": 422,
    "detail": "Account balance is $10.00, but transfer requires $25.00",

Static analysis

No suspicious patterns detected.