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Security audit

golang-design-patterns

Security checks for vulnerabilities and agentic risk

Overview

This is a Go design-patterns guidance skill with proportionate coding tools and no evidence of hidden execution, persistence, or data exfiltration.

Before installing, expect this skill to guide and potentially edit Go code when invoked, and to run Go/lint/git commands if the host allows them. I found no hidden install behavior, credential handling, persistence, or unrelated data access.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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
Findings (1)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · evals/evals.json (reported line 444)May include surrounding context.

json
"name": "retry-context-check",
    "description": "Tests whether retry logic checks context cancellation between attempts",
    "prompt": "Write a Go retry function that retries a given operation up to 5 times with exponential backoff. The function should be production-ready.",
    "trap": "Without the skill, the model may implement retry without checking ctx.Err() between attempts. The skill says retry logic MUST check context cancellation between attempts.",
    "assertions": [
      { "id": "17.1", "text": "Function accepts a context.Context parameter" },
      {

Static analysis

No suspicious patterns detected.