Apple WebKit Security Flaw Exposes iOS and macOS Users to Content-Based Bypass Attacks
ID: 0ab03b9a-4ebd-5f1c-82da-00080b25b4b9
STIX ID: report--0ab03b9a-4ebd-5f1c-82da-00080b25b4b9
Feed Name: GBHackers
Threat Score
Apple released emergency Background Security Improvements to patch a critical WebKit Navigation API vulnerability (CVE-2026-20643) that could allow a Same Origin Policy bypass on iOS 26.3.1, iPadOS 26.3.1, and macOS 26.3.x; the issue was fixed by improved input validation and Apple urges users and administrators to keep automatic background updates enabled.
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