Summary:
- The article discusses a critical security vulnerability in a popular web application framework called Apache Struts.
- This vulnerability, known as a cross-site scripting (XSS) bug, allows attackers to execute malicious code on websites that use the affected framework.
- The Cybersecurity and Infrastructure Security Agency (CISA) has added this vulnerability to their list of actively exploited bugs, meaning it is being actively targeted by cybercriminals.