https://www.vice.com/en_us/article/dyz8nw/iphone-ios-ios13-jailbreak-uncover-unc0ver

On Saturday, hackers and developers released the first public jailbreak for Apple's iOS operating system that they say works at launch on all iOS devices. A hacker who worked on the jailbreak says it works by taking advantage of a vulnerability in iOS that Apple is not aware of, or a so-called zero day.

The news signals the first time a jailbreak has been released that works on all devices on launch day since iOS 10, according to iOS security researcher Pwn20wnd, who discovered the underlying vulnerability powering the new jailbreak.