A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. A maliciously crafted app may be able to bypass code signing enforcement.
https://support.apple.com/en-us/128070
https://support.apple.com/en-us/128069
https://support.apple.com/en-us/128068