A CVE (Common Vulnerabilities and Exposures) represents a publicly known cybersecurity vulnerability in software or hardware that has been assigned a unique identifier. When a CVE is detected, it means that the API or application is potentially exposed to known attacks associated with that vulnerability. This can compromise the confidentiality, integrity, and availability of the system, leading to security breaches, data leaks, or service disruption.
An attacker exploits a known CVE in a library used by the API, such as a SQL injection vulnerability in an outdated version of a database driver. The attacker is able to send specially crafted requests to the API that exploit the vulnerability, allowing them to bypass authentication, execute arbitrary SQL queries, and access sensitive data. This could lead to data theft, system compromise, or denial of service. Once the CVE is detected, the organization applies the security patch, preventing further exploitation of the vulnerability.