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Security audit

n8n workflow automation

Security checks for vulnerabilities and agentic risk

Overview

This skill is a transparent n8n workflow-design helper with safety-oriented instructions and no executable payloads.

Before installing, treat generated workflow JSON as a draft: review the n8n nodes, credential references, API scopes, write targets, schedules, and retry behavior before importing or activating it. Do not paste secrets into generated workflow files.

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.