https://wccftech.com/you-can-now-jailbreak-ios-13-3-with-checkra1n-0-9-7/

You can now use checkra1n to jailbreak iOS 13.3. The tool was initially released as a solution based on checkm8 exploit, to jailbreak devices running iOS 12.3 and above. The devices range from iPhone 5s and above, although support for a few iPhone and iPad models is still experimental. Here is all you need to know about checkra1n iOS 13.3 jailbreak.

Thanks to checkra1n, users on iOS 13.3 can jailbreak their iOS devices to install tweaks and apps that cannot be installed through official means like the App Store. Checkra1n jailbreak works by taking advantage of a vulnerability in A5 - A 11 processors, created by Apple for iPhone, iPad, and iPod touch devices. The BootROM vulnerability is called checkm8 and cannot be patched by Apple through software updates.