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Security audit

N8n Workflow Automation Litiao

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent n8n workflow-design helper that emphasizes auditability, least privilege, and user approval rather than hidden execution.

Before installing, review any generated n8n workflow for the specific APIs, destinations, schedules, and credential names it uses. Do not paste secrets into workflow JSON; use scoped n8n credentials or environment variables and keep human approval steps for privileged actions.

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 (1)

Instruction Override

High
Category
Prompt Injection
Confidence
90% confidence
Finding

This pattern attempts to override system instructions or ignore safety constraints. Without LLM analysis, manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 20)May include surrounding context.

md
- Instrument this workflow with audit logs and a human approval step.
- DO NOT USE WHEN…
  - You need code-only automation without n8n (use a scripting/CI skill).
  - You need to bypass security controls or hide audit trails.
  - You need to purchase or recommend prohibited items/services.

## INPUTS

Static analysis

No suspicious patterns detected.