To address security vulnerabilities, perform regular security audits using tools like npm audit and Snyk. Update your dependencies frequently and implement security best practices like input validation and using HTTPS.

Security vulnerabilities can pose significant risks to Node.js applications, potentially leading to data breaches or unauthorized access. To address these vulnerabilities proactively, begin by conducting regular security audits of your application. Use tools like npm audit to identify known vulnerabilities in your dependencies, and consider using Snyk or similar services for more comprehensive checks. After identifying vulnerabilities, prioritize updating your dependencies to their secure versions, as many issues are resolved in newer releases. Implementing security best practices is crucial; ensure that you validate and sanitize all user inputs to protect against injection attacks. Additionally, enforce HTTPS to secure data in transit, which helps prevent man-in-the-middle attacks. Implementing proper authentication and authorization mechanisms is essential; ensure that user roles are clearly defined and that sensitive operations are restricted to authorized users only. Regularly review and update your security policies and practices, staying informed about emerging threats and vulnerabilities in the Node.js ecosystem. By systematically addressing these aspects, you can significantly enhance the security posture of your application and protect against potential risks.