Invalid request body validation for properties defined with capital letters

[konradgKainos]

The is specific scenario when request body validation fails when properties are named with capital letters. I assume it should accept only json with capital letter property but accepts as follows:

• capital letter property
• lower case property
• capital and lower case property in the same request

Example:
For endpoint
parameters: - in: body name: body schema: $ref: '#/definitions/MyRequest'

With definition
definitions: MyRequest: type: object properties: IBAN: type: string required: - IBAN

It accepts following jsons:
{ "IBAN": "1234567889" }

{ "iban": "1234567889" }

{ "iban": "1234567889", "IBAN": "1234567889" }

Acceptance criteria:

• Only capital letter json property is accepted as a valid request, other should result in bad_request.

{ "IBAN": "1234567889" }