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.
Metrics
CVSS 3.1 4.3/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Safari | < 26.4 |
| Apple | iOS and iPadOS | < 26.4 |
| Apple | macOS | < 26.4 |
| Apple | tvOS | < 26.4 |
| Apple | visionOS | < 26.4 |
| Apple | watchOS | < 26.4 |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
References
- https://support.apple.com/en-us/126792Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126794Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126797Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126798Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126799Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126800Release Notes, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:10702
- https://access.redhat.com/errata/RHSA-2026:11329
- https://access.redhat.com/errata/RHSA-2026:11814
- https://access.redhat.com/errata/RHSA-2026:13845
- https://access.redhat.com/errata/RHSA-2026:14659
- https://access.redhat.com/errata/RHSA-2026:16056
- https://access.redhat.com/errata/RHSA-2026:16695
- https://access.redhat.com/errata/RHSA-2026:19206
- https://access.redhat.com/errata/RHSA-2026:19535
- https://access.redhat.com/errata/RHSA-2026:22136
- https://access.redhat.com/errata/RHSA-2026:9692
- 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
Timeline
- Published
- Mar 25, 2026
- Last modified
- Jul 15, 2026
- NVD status
- Modified