The Product Owner is the sole person responsible for managing the Product Backlog and ensuring that the value of the work the Scrum Team performs is understood by everyone involved. The Product Owner is the only person who can cancel the Sprint, although he or she may do so under influence from the stakeholders, the Development Team, or the Scrum Master1. A Sprint can be cancelled before the Sprint time-box is over. Only the Product Owner has the authority to cancel the Sprint, although he or she may do so under influence from the stakeholders, the Development Team, or the Scrum Master. A Sprint would be cancelled if the Sprint Goal becomes obsolete. This might occur if the company changes direction or if market or technology conditions change. In general, a Sprint should be cancelled if it no longer makes sense given the circumstances. But, due to the short duration of Sprints, cancellation rarely makes sense1. Reference:

Scrum Guide

Sprint Cancellation

Can Scrum Master cancel a sprint?