In a rapidly evolving IT environment, a cloud service provider offers various services to businesses, enabling them to store and process data securely$.$ To enhance security, the provider regularly updates its systems and software. Despite these efforts, a security researcher discovers a previously unknown vulnerability in one of the cloud$-$specific applications, leaving customer data exposed to potential threats. In this scenario, which vulnerability is the security researcher likely to have found in the cloud$-$specific application?

A$.$SQL injection vulnerability