Ensure array schema should have the field `maxItems` set

Ensure that the maximum number of items in an array is defined in OpenAPI. Otherwise, the API may accept excessive or unexpected data and cause errors.

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Risk Level: high
Platform: OpenAPI
Spectral Rule ID: OPENAPI003

REMEDIATION

Define the maxItems field for the array schema.

swagger: '2.0'
# OR
openapi: '3.0.0'
info:
  version: 1.0.0
  title: Sample API
paths:
  /users:
    get:
      responses:
        '200':
          description: A list of users.
          content:
            application/json:
              schema:
                type: array
+               maxItems: 10
                items:
                  type: object
                  properties:
                    name:
                      type: string
                    age:
                      type: integer
                    email:
                      type: string
                      format: email

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Updated 7 months ago