A logic issue was addressed with improved checks. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, watchOS 26.3. An app may be able to break out of its sandbox.
https://support.apple.com/en-us/126352
https://support.apple.com/en-us/126350
https://support.apple.com/en-us/126349