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§ toolsandboxHubSpot MCP

hubspot-create-property

on npm:@hubspot/mcp-server@0.4.0

Severity

critical0
high1
medium1
low0
info0

2 findings on this tool

  1. highexcessive agencyf-r3-hubspot_create_property

    Tool `hubspot-create-property` name implies a side effect that is not declared

    `hubspot-create-property` looks like a side-effecting tool (its name contains a mutation verb), but its `side_effects` declaration is []. A policy synthesizer cannot produce safe rules for this tool because it cannot tell what it actually does.

    fix: Declare the tool's true side effects explicitly. If the tool is genuinely read-only, rename it to match (e.g. `email.preview` rather than `email.send`).

    OWASP LLM08NIST MEASURE-2.6ATLAS T0051
  2. mediumunconstrained inputf-r1-hubspot_create_property

    Tool `hubspot-create-property` accepts unconstrained string input

    The following string parameter(s) have no `maxLength` constraint: `calculationFormula`, `description`, `fieldType`, `groupName`, `label`, `name`, `objectType`, `type`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

    fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

    OWASP LLM01NIST MEASURE-2.3ATLAS T0051

About this tool

hubspot-create-property is one of 21 tools exposed by HubSpot MCP. The server scored 40/100 overall against the capframe rule engine (source: sandbox). Last scanned 2026-06-05.

The findings above are emitted by the public capframe.findings.v1 schema. Disagree with one? Open an issue.