The issue was addressed with improved memory handling. This issue is fixed in Safari 17.4, iOS 17.4 and iPadOS 17.4, macOS Sonoma 14.4, tvOS 17.4, visionOS 1.1, watchOS 10.4. Processing web content may lead to a denial-of-service.
https://support.apple.com/en-us/120895
https://support.apple.com/en-us/120894
https://support.apple.com/en-us/120893
https://support.apple.com/en-us/120883