Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A malicious website may be able to process restricted web content outside the sandbox.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Apple Safari
0 to < 26.4affected
Apple iOS and iPadOS
0 to < 26.4affected
Apple macOS
0 to < 26.4affected
Apple tvOS
0 to < 26.4affected
Apple visionOS
0 to < 26.4affected
Apple watchOS
0 to < 26.4affected
References
- https://support.apple.com/en-us/126792 ↗
- https://support.apple.com/en-us/126794 ↗
- https://support.apple.com/en-us/126797 ↗
- https://support.apple.com/en-us/126798 ↗
- https://support.apple.com/en-us/126799 ↗
- https://support.apple.com/en-us/126800 ↗
- https://access.redhat.com/security/cve/CVE-2026-28859 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2453006 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28859.json ↗
- https://access.redhat.com/errata/RHSA-2026:22136 ↗
- https://access.redhat.com/errata/RHSA-2026:10702 ↗
- https://access.redhat.com/errata/RHSA-2026:16056 ↗
- https://access.redhat.com/errata/RHSA-2026:13845 ↗
- https://access.redhat.com/errata/RHSA-2026:11814 ↗
- https://access.redhat.com/errata/RHSA-2026:19535 ↗
- https://access.redhat.com/errata/RHSA-2026:16695 ↗
- https://access.redhat.com/errata/RHSA-2026:14659 ↗
- https://access.redhat.com/errata/RHSA-2026:11329 ↗
- https://access.redhat.com/errata/RHSA-2026:9692 ↗
- https://access.redhat.com/errata/RHSA-2026:19206 ↗