From arstechnica.com
Apple said it has pushed a silent macOS update that removes the undocumented webserver that was installed by the Zoom conferencing app for Mac.
The webserver accepts connections from any device connected to the same local network, a security researcher disclosed on Monday. The server continues to run even when a Mac user uninstalls Zoom. The researcher showed how the webserver can be abused by people on the same network to force Macs to reinstall the conferencing app. Zoom issued an emergency patch on Tuesday in response to blistering criticism from security researchers and end users.