VULNERABILITY INTELLIGENCE
CVE-2026-20643
CVSS score5.4 MEDIUM
EPSS probability0.36%
CISA KEVNot currently listed
Published2026-03-17
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Description
A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may bypass Same Origin Policy.
Weakness classification
- CWE-20: Improper Input Validation
- CWE-346: Origin Validation Error