From securityaffairs.co
![Fastjson Library 2](https://i0.wp.com/securityaffairs.co/wordpress/wp-content/uploads/2022/06/Fastjson-Library-2.jpg?resize=1024%2C392&ssl=1)
Cybersecurity researchers from JFrog disclosed details of a now patched high-severity security vulnerability in the popular Fastjson library that could be potentially exploited to achieve remote code execution.
Fastjson is a Java library that can be used to convert Java Objects into their JSON representation. It can also be used to convert a JSON string to an equivalent Java object. Fastjson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of.