Yes. CPP is considered assessable income for taxation and social security purposes and may impact the rate at which you receive social security payments. We recommend you seek personalised taxation advice.
For more information on CPP please see - https://students.flinders.edu.au/finances-and-admin/commonwealth-prac-payment
For more information on CPP please see - https://students.flinders.edu.au/finances-and-admin/commonwealth-prac-payment