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Security audit

HubSpot

Security checks for vulnerabilities and agentic risk

Overview

This HubSpot skill is a disclosed Maton CLI/API integration with strong approval and least-privilege guidance for sensitive CRM operations.

Install only if you intend to let Maton access your HubSpot account. Use least-privilege OAuth scopes, confirm every write/delete/bulk operation, and be especially careful with triggers or destinations because they can forward future CRM events automatically until removed.

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 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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
84% confidence
Finding

Line L003 states this shared reference 'does not widen' the app the skill is about. Yet the file goes on to document triggerable events for tickets, an object type not included in the manifest's documented CRM surface, creating a direct documentation-level contradiction about whether this material expands what the skill covers.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The manifest says the documented HubSpot surface is limited to CRM contacts, companies, deals, associations, and properties, and that anything outside that documented surface should be user-requested by endpoint name. This file, however, exposes ticket.created, ticket.updated, and ticket.deleted as part of the skill's reference material, which broadens the apparent supported HubSpot object scope beyond what the manifest says is documented.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.