Security researcher @wh1te4ever demonstrated a WebKit-based re-jailbreak utility for iOS 12 devices.The demo showed an iPhone 5s running iOS 12.5.7 being re-jailbroken using a WebKit exploit triggered via Safari.The proof-of-concept currently supports only the iPhone 5s with firmware 12.5.7 and needs updating for more device and firmware combinations.There is no set release date for this tool, and it's uncertain if it will be made available to the public.