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Security audit

golang-error-handling

Security checks for vulnerabilities and agentic risk

Overview

This is a Go error-handling guidance skill whose code-editing and audit behavior is disclosed, scoped to Go files, and aligned with its purpose.

Install this if you want an agent to help write, review, or audit Go error handling. Be aware it can edit Go files, run Go/lint/git commands, and use sub-agents during audits, so review proposed changes as you would any coding assistant output.

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 · references/error-creation.md (reported line 21)May include surrounding context.

md
// ✗ Bad — only checking in some branches
result, err := doSomething()
fmt.Println(result) // using result without checking err

// ✓ Good — always check before using other return values
data, err := os.ReadFile("config.yaml")

Static analysis

No suspicious patterns detected.