Attackers take advantage of Apache Struts vulnerabilities

Apache Struts is a framework for building Web applications. Apache Struts is prone to a remote code-execution vulnerability. Specifically, this issue affects the Jakarta based file upload Multipart parser. An attacker can exploit this issue through a malicious Content-Type value.

Apache Struts. Apache Struts is a free, open-source, MVC framework for creating elegant, modern Java web applications. It favors convention over configuration, is extensible using a plugin architecture, and ships with plugins to support REST, AJAX and JSON.

For windows OS
Open file explorer, search for struts*.jar.
Open struts-core.jar with a unzip tool (e.g. IZArc2Go)
Open META-INF folder and open MANIFEST.MF file with a text editor.
There you will find Specification-Version: with the version number.

Remote Code Execution (RCE) The best way to protect a computer from a remote code execution vulnerability is to fix holes that allow an attacker to gain access. Microsoft often releases security patches addressing remote code execution vulnerabilities in its monthly Patch Tuesday fixes.

Apache Struts 2. ... Apache Struts 2 is an open-source web application framework for developing Java EE web applications. It uses and extends the Java Servlet API to encourage developers to adopt a model–view–controller (MVC) architecture.