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Security audit

HVAC Quote Generator

Security checks for vulnerabilities and agentic risk

Overview

This quote generator needs review because it ignores user tax settings and cannot correctly process its supplied template, creating unreliable customer estimates.

Treat outputs as unverified drafts until template parsing and user-controlled tax handling are corrected. Check every amount and required contract term before customer use. Use a dedicated output directory to avoid overwriting earlier estimates. The optional Windows app is unnecessary for this workflow and requires separate assessment.

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
Vulnerability Patterns
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (2)

Skill declares no tool scope ('permissions' or 'allowed-tools') but code capabilities were detected: file_write.

Medium
Category
MCP Least Privilege
Confidence
70% confidence
Finding

Without declared permissions the skill's intent is opaque and cannot be validated.

Content

No source excerpt is available for this finding.

The generated guardrail says tax rates must be user-supplied, but the code applies a fixed 7% rate.

Medium
Category
Excessive Agency
Confidence
97% confidence
Finding

The script unconditionally applies a 7% tax rate without obtaining a user-confirmed rate, contradicting its generated guardrail that tax rates must be user-supplied. US HVAC tax treatment varies by jurisdiction and transaction, so this can produce incorrect customer-facing totals and potential billing or tax-compliance problems. The rate is disclosed in the output, which reduces concealment risk, but the intended use for signable contractor quotes makes the integrity issue consequential.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.