Web applications URLs describe what kind of request is being send by a user.
Eg; https://www.researchgate.net/topics?ev=nav_discussions
In the link give above;
1- /topics tells that the user visits the topics page.
2- ev=nav_discussions send a dynamic info to the web server, this info could be a data id in the database.
All visited links could be stored in the browser history.
Those these pose a serious risk to the web application user or application, especially in the case of sensitive applications like Banking Softwares and government systems?