The Apache Software Foundation has released the security bulletins to address the vulnerabilities in Apache Struts. A remote attacker could exploit the vulnerabilities by sending a specially crafted request to the affected systems.
Successful exploitation of the vulnerabilities could lead to denial of service on an affected system.
Administrators of the affected systems should upgrade the Apache Struts to current versions 2.5.31 or 6.1.2.1 to address the issues. The updates are available at:
https://struts.apache.org/download.cgi