socketio — Vulnerabilities & Security Advisories 6

Socket.IO enables real-time bidirectional communication for web applications, commonly used in chat systems, live notifications, and collaborative tools. Historically, it has faced vulnerabilities including remote code execution (RCE), cross-site scripting (XSS), and server-side request forgery (SSRF), often stemming from improper input validation and insecure default configurations. While no major public incidents have been widely documented, the six CVEs highlight persistent security concerns around message handling and authentication. Developers should implement strict input sanitization, update regularly, and configure security headers to mitigate risks, as the library's broad adoption makes it a potential target for exploitation.