Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. A remote attacker may be able to cause a denial-of-service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | Safari | < 26.3 | 26.3 |
| Apple | iOS and iPadOS | < 18.7.5, < 26.3 | 18.7.5 |
| Apple | macOS | < 26.3 | 26.3 |
| Apple | visionOS | < 26.3 | 26.3 |
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 | 2.50.6-1 | — |
| Debian 13 | webkit2gtk | 2.50.6-1~deb13u1 | DSA-6172-1 |
| Debian 13 | wpewebkit | No fix yet | — |
| Debian 12 | webkit2gtk | 2.50.6-1~deb12u1 | DSA-6172-1 |
| Debian 12 | wpewebkit | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | — |
| Ubuntu 18.04 LTS | webkitgtk +3 | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | webkitgtk +3 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | webkit2gtk3 +3 | 2.52.3-0.el9_7.1 | RHSA-2026:19206, RHSA-2026:9692 |
| RHEL 8 | webkit2gtk3 +3 | 2.52.3-1.el8_10 | RHSA-2026:10702 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.6 EUS | webkit2gtk3 +3 | 2.52.3-1.el9_6 | RHSA-2026:11329 |
| RHEL 9.4 EUS | webkit2gtk3 +3 | 2.52.3-1.el9_4 | RHSA-2026:14659 |
| RHEL 9.2 E4S | webkit2gtk3 +3 | 2.52.3-1.el9_2 | RHSA-2026:16695 |
| RHEL 9.0 E4S | webkit2gtk3 +3 | 2.52.3-1.el9_0 | RHSA-2026:19535 |
| RHEL 8.8 TUS | webkit2gtk3 +3 | 2.52.3-1.el8_8 | RHSA-2026:11814 |
| RHEL 8.8 E4S | webkit2gtk3 +3 | 2.52.3-1.el8_8 | RHSA-2026:11814 |
| RHEL 8.6 TUS | webkit2gtk3 +3 | 2.52.3-1.el8_6 | RHSA-2026:13845 |
| RHEL 8.6 E4S | webkit2gtk3 +3 | 2.52.3-1.el8_6 | RHSA-2026:13845 |
| RHEL 8.6 AUS | webkit2gtk3 +3 | 2.52.3-1.el8_6 | RHSA-2026:13845 |
| RHEL 8.4 EUS Long Life | webkit2gtk3 +3 | 2.52.3-1.el8_4 | RHSA-2026:16056 |
| RHEL 8.4 AUS | webkit2gtk3 +3 | 2.52.3-1.el8_4 | RHSA-2026:16056 |
| RHEL 7 ELS | webkitgtk4 +4 | 2.52.3-1.el7_9 | RHSA-2026:22136 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | webkit2gtk3 +3 | 2.52.3-0.el9_7.1 | ALSA-2026:19206, ALSA-2026:9692 |
| AlmaLinux 8 | webkit2gtk3 +3 | 2.52.3-1.el8_10 | ALSA-2026:10702 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | webkit2gtk3 | 2.52.3-0.el9_7.1 | RLSA-2026:19206, RLSA-2026:9692 |
| Rocky Linux 8 | webkit2gtk3 | 2.52.3-1.el8_10 | RLSA-2026:10702 |
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 |
| SLES 15 SP5 | webkit2gtk3 +2 | 2.52.0-150400.4.137.3 | SUSE-SU-2026:1150-1 |
| SLES 15 SP4 | webkit2gtk3 +2 | 2.52.0-150400.4.137.3 | SUSE-SU-2026:1150-1 |
| SLES 12 SP5 | webkit2gtk3 | 2.52.0-4.54.1 | SUSE-SU-2026:1139-1 |
Show 7 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 for SAP 15 SP5 | webkit2gtk3 +2 | 2.52.0-150400.4.137.3 | SUSE-SU-2026:1150-1 |
| SLES for SAP 15 SP4 | webkit2gtk3 +2 | 2.52.0-150400.4.137.3 | SUSE-SU-2026:1150-1 |
| SLES 16.0 | webkit2gtk3 +1 | 2.52.1-160000.1.1 | SUSE-SU-2026:21180-1 |
| SLE HPC 15 SP5 | webkit2gtk3 +2 | 2.52.0-150400.4.137.3 | SUSE-SU-2026:1150-1 |
| SLE HPC 15 SP4 | webkit2gtk3 +2 | 2.52.0-150400.4.137.3 | SUSE-SU-2026:1150-1 |
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 | 2.50.6-1.amzn2 | ALAS2-2026-3223 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | webkit2gtk3 +3 | 2.52.3-0.el9_7.1 | ELSA-2026-19206, ELSA-2026-9692 |
| Oracle Linux 8 | webkit2gtk3 +3 | 2.52.3-1.el8_10 | ELSA-2026-10702 |
Advisories 34
- ALSA-2026:9692 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:19206 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:10702 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-0782 WebKitGTK: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 28, 2026
- WID-SEC-2026-1201 Oracle Java SE: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- WID-SEC-2026-0403 Apple macOS Tahoe, Sequoia und Sonoma: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 8, 2026
- RHSA-2026:9692 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:22136 Red Hat Security Advisory: webkitgtk4 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:19535 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:19206 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:16695 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:16056 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:14659 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:13845 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:11814 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:11329 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- RHSA-2026:10702 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Jul 15, 2026
- ELSA-2026-19206 Important: webkit2gtk3 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 12, 2026
- RLSA-2026:19206 Important: webkit2gtk3 security update Rocky Linux Security Advisories · May 28, 2026
- RLSA-2026:10702 Important: webkit2gtk3 security update Rocky Linux Security Advisories · Apr 27, 2026
- ELSA-2026-10702 Important: webkit2gtk3 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 27, 2026
- RLSA-2026:9692 Important: webkit2gtk3 security update Rocky Linux Security Advisories · Apr 24, 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
- ELSA-2026-9692 Important: webkit2gtk3 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 22, 2026
- SUSE-SU-2026:1364-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Apr 16, 2026
- ALAS2-2026-3223 Moderate: webkitgtk4 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 1, 2026
- SUSE-SU-2026:1150-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Apr 1, 2026
- SUSE-SU-2026:1139-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Mar 31, 2026
- WID-SEC-2026-0402 Apple iOS und iPadOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 24, 2026
- DSA-6172-1 webkit2gtk - security update Debian Security (DSA / DLA) · Mar 21, 2026
- NCSC-2026-0064 Kwetsbaarheden verholpen in Apple iOS en iPadOS NCSC-NL (Netherlands) · Feb 13, 2026
- NCSC-2026-0063 Kwetsbaarheden verholpen in Apple macOS NCSC-NL (Netherlands) · Feb 13, 2026
- WID-SEC-2026-0400 Apple Safari: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 11, 2026