Don’t delay, do it today. This is a code-implantation bug in WebKit that attackers already know how to exploit.

There are Rapid Security Responses for the latest versions of macOS Ventura 13.4.1, iOS 16.5.1 and iPadOS 16.5.1.

For the older supported versions macOS Big Sur and macOS Monterey, there’s an old-style system update that just patches Safari, which will show up as Safari 16.5.2 after the update.

So far, however [2023-07-10T23:00:00Z], there are no updates for any other Apple platforms, even though it’s possible that that iOS 15, still officially supported on older iPhones and iPads, is affected too, along with Apple Watches and TVs.