This issue was addressed with additional entitlement checks. This issue is fixed in iPadOS 17.7.7, macOS Sequoia 15.4, macOS Sonoma 14.7.5, macOS Ventura 13.7.5. An app may be able to retrieve Safari bookmarks without an entitlement check.
https://support.apple.com/en-us/122405
https://support.apple.com/en-us/122375
https://support.apple.com/en-us/122374
https://support.apple.com/en-us/122373
http://seclists.org/fulldisclosure/2025/May/6
http://seclists.org/fulldisclosure/2025/Apr/9