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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Apple Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
|
— |
26.3.1
|
|
Apple Iphone_Os
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
|
— |
26.3.1
|
|
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
|
— |
26.3.1
|
References 7
https://support.apple.com/en-us/126604
product-security@apple.com
http://seclists.org/fulldisclosure/2026/Mar/10
af854a3a-2127-422b-91ae-364da2661108
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