Description
A logic issue was addressed with improved state management. This issue is fixed in 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. A malicious website may be able to access script message handlers intended for other origins.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | Safari | < 26.4 | 26.4 |
| Apple | iOS and iPadOS | < 18.7.7, < 26.4 | 18.7.7 |
| Apple | macOS | < 26.4 | 26.4 |
| Apple | visionOS | < 26.4 | 26.4 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wpewebkit +1 | 2.52.1-1 | — |
| Debian 13 | webkit2gtk | 2.52.3-2~deb13u1 | — |
| Debian 13 | wpewebkit | No fix yet | — |
| Debian 12 | wpewebkit +1 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | webkit2gtk | 2.52.3-0ubuntu0.26.04.2 | — |
| Ubuntu 25.10 | webkit2gtk | 2.52.3-0ubuntu0.25.10.1 | — |
| Ubuntu 24.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 24.04 LTS | webkit2gtk | 2.52.3-0ubuntu0.24.04.1 | — |
| Ubuntu 22.04 LTS | wpewebkit +2 | No fix yet | — |
| Ubuntu 20.04 LTS | wpewebkit +2 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | webkitgtk +3 | No fix yet | — |
| Ubuntu 16.04 LTS | webkitgtk +3 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | webkit2gtk3 +2 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 |
| SLES 15 SP6 | webkit2gtk3 +2 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | webkit2gtk3 +1 | 2.52.1-160000.1.1 | SUSE-SU-2026:21180-1 |
| SLES for SAP 15 SP6 | webkit2gtk3 +2 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 |
| SLES 16.0 | webkit2gtk3 +1 | 2.52.1-160000.1.1 | SUSE-SU-2026:21180-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | webkit2gtk3 +2 | 2.52.1-160000.1.1 | openSUSE-SU-2026:20518-1 |
| openSUSE Leap 15.6 | webkit2gtk3 +2 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | webkitgtk4 +3 | 2.52.1-1.amzn2 | ALAS2-2026-3270 |
Advisories 10
- WID-SEC-2026-0911 WebKitGTK: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 28, 2026
- WID-SEC-2026-0852 Apple iOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 8, 2026
- WID-SEC-2026-0853 Apple macOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 8, 2026
- WID-SEC-2026-0848 Apple Safari: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- ALAS2-2026-3270 Moderate: webkitgtk4 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 29, 2026
- openSUSE-SU-2026:20518-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:21180-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:1364-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Apr 16, 2026
- NCSC-2026-0102 Kwetsbaarheden verholpen in Apple macOS NCSC-NL (Netherlands) · Mar 25, 2026
- NCSC-2026-0101 Kwetsbaarheden verholpen in Apple iOS en iPadOS NCSC-NL (Netherlands) · Mar 25, 2026