Understanding Cross-Origin Resource Sharing Vulnerabilities

To avoid exposure to a variety of web application vulnerabilities, specific security considerations must be made when implementing Cross-Origin Resource Sharing.

Today’s modern web applications rely heavily on JavaScript to be dynamic, and ensure the best experience for end-users. Providing content and data to the users often requires interactions with other web applications, which include cross-domain requests and an additional configuration step on the application side known as a Cross-Origin Resource Sharing (CORS) policy.

In the post linked below, Rémy Marot will explain how a misconfiguration of a CORS policy can make your web application vulnerable, and how the Tenable.io Web Application Scanner (WAS) can help you identify these vulnerabilities.

For more information about this vulnerability, including Tenable product coverage, please visit this blog.