CVE-2024-44155 is a vulnerability involving improper handling of a custom URL scheme in Safari and related Apple operating systems. The issue was addressed by improved input validation in Safari 18, iOS 17.7.1, iPadOS 17.7.1, macOS Sequoia 15, watchOS 11, iOS 18, and iPadOS 18. This flaw could allow maliciously crafted web content to violate iframe sandboxing policies, potentially leading to integrity impacts.