Cross-Origin Vulnerability in Apple Navigation API
CVE-2026-20643

Currently unrated

Key Information:

Vendor: Apple
Status: Mac OS; iOS; iPad OS
Vendor: CVE Published:; 17 March 2026

What is CVE-2026-20643?

A cross-origin vulnerability exists within the Navigation API that could allow maliciously crafted web content to bypass the Same Origin Policy. This issue has been rectified with enhanced input validation in version updates for iOS, iPadOS, and macOS, specifically in versions 26.3.1 and 26.3.2. Users should ensure their systems are updated to the latest versions to mitigate potential security risks.

Human OS v1.0:
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