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Security audit

Norman: Tax Report

Security checks for vulnerabilities and agentic risk

Overview

This skill is a focused German tax-report assistant that can view tax data and submit filings only after preview and explicit confirmation.

Before installing, confirm you use Norman Finance for German tax reporting and are comfortable granting the connected MCP access to tax reports, VAT settings, and filing actions. Treat ELSTER submission as high impact: review the generated preview carefully and only confirm submission when the figures are correct.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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)

Vague Triggers

Low
Confidence
88% confidence
Finding
The manifest description says to use the skill when the user asks about broad terms like "taxes" or "Steuern," which can overlap with general financial or informational conversations. It does not provide exclusion conditions or narrower trigger constraints to clarify when the skill should not activate.

Static analysis

No suspicious patterns detected.