The WiscWeb Service was updated to WordPress Core version 5.2.3 on Friday, September 6, 2019. This update is a security release that aims to fix several potential vulnerabilities (mostly related to cross site scripting). More information about these changes can be found on the WordFence website.
If you notice anything that is not working as expected with your site following these updates, please don’t hesitate to get in touch with us at cms-support@doit.wisc.edu.