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CVE-2026-20643

MEDIUM

5.4

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.

CVE Details

CVSS v3.1 Score5.4

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published3/17/2026

Last Modified3/25/2026

Sourcenvd

Honeypot Sightings0

Affected Products

apple:ipadosapple:iphone_osapple:macos

Weaknesses (CWE)

CWE-20CWE-346

References

https://support.apple.com/en-us/126604(product-security@apple.com)

https://support.apple.com/en-us/126792(product-security@apple.com)

https://support.apple.com/en-us/126793(product-security@apple.com)

https://support.apple.com/en-us/126794(product-security@apple.com)

https://support.apple.com/en-us/126799(product-security@apple.com)

https://support.apple.com/en-us/126800(product-security@apple.com)

http://seclists.org/fulldisclosure/2026/Mar/10(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.