Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may result in the disclosure of process memory.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | Safari | < 26.5.2 | 26.5.2 |
| Apple | iOS and iPadOS | < 26.5.2 | 26.5.2 |
| Apple | macOS | < 26.5.2 | 26.5.2 |
| Apple | tvOS | < 26.6 | 26.6 |
| Apple | visionOS | < 26.6 | 26.6 |
| Apple | watchOS | < 26.6 | 26.6 |
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 | 2.52.5-1 | — |
| Debian 13 | webkit2gtk | 2.52.5-1~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 | 2.52.6-0ubuntu0.26.04.1 | USN-8703-1 |
| Ubuntu 24.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 24.04 LTS | webkit2gtk | 2.52.6-0ubuntu0.24.04.1 | USN-8703-1 |
| 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 | 2.52.5-1.el9_8 | RHSA-2026:42062 |
| RHEL 8 | webkit2gtk3 +3 | 2.52.5-1.el8_10 | RHSA-2026:74084, RHSA-2026:42088 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.6 EUS | webkit2gtk3 +3 | 2.52.5-1.el9_6 | RHSA-2026:54572 |
| RHEL 9.4 E4S | webkit2gtk3 +3 | 2.52.5-1.el9_4 | RHSA-2026:54634 |
| RHEL 9.2 E4S | webkit2gtk3 +3 | 2.52.5-1.el9_2 | RHSA-2026:58550 |
| RHEL 8.8 TUS | webkit2gtk3 +3 | 2.52.5-1.el8_8 | RHSA-2026:59326 |
| RHEL 8.8 E4S | webkit2gtk3 +3 | 2.52.5-1.el8_8 | RHSA-2026:59326 |
| RHEL 8.6 EUS Long Life | webkit2gtk3 +3 | 2.52.5-1.el8_6 | RHSA-2026:59325 |
| RHEL 8.6 AUS | webkit2gtk3 +3 | 2.52.5-1.el8_6 | RHSA-2026:59325 |
| RHEL 8.4 EUS Long Life | webkit2gtk3 +3 | 2.52.5-1.el8_4 | RHSA-2026:57348 |
| RHEL 8.4 AUS | webkit2gtk3 +3 | 2.52.5-1.el8_4 | RHSA-2026:57348 |
| RHEL 7 ELS | webkitgtk4 +4 | 2.52.5-1.el7_9 | RHSA-2026:58564 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | webkit2gtk3 +3 | 2.52.5-1.el9_8 | ALSA-2026:42062 |
| AlmaLinux 8 | webkit2gtk3 +3 | 2.52.5-1.el8_10 | ALSA-2026:74084, ALSA-2026:42088 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | webkit2gtk3 | 2.52.5-1.el9_8 | RLSA-2026:42062 |
| Rocky Linux 8 | webkit2gtk3 | 2.52.5-1.el8_10 | RLSA-2026:74084, RLSA-2026:42088 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | webkit2gtk3 +2 | 2.52.5-150600.12.71.1 | SUSE-SU-2026:3338-1 |
| SLES 15 SP6 | webkit2gtk3 +2 | 2.52.5-150600.12.71.1 | SUSE-SU-2026:3338-1 |
| SLES 15 SP5 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES 15 SP4 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES 12 SP5 | webkit2gtk3 | 2.52.5-4.63.2 | SUSE-SU-2026:3555-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | webkit2gtk3 +1 | 2.52.5-160000.1.1 | SUSE-SU-2026:23133-1, SUSE-SU-2026:23111-1 |
| SLES for SAP 15 SP6 | webkit2gtk3 +2 | 2.52.5-150600.12.71.1 | SUSE-SU-2026:3338-1 |
| SLES for SAP 15 SP5 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES for SAP 15 SP4 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES 16.0 | webkit2gtk3 +1 | 2.52.5-160000.1.1 | SUSE-SU-2026:23133-1, SUSE-SU-2026:23111-1 |
| SLE HPC 15 SP5 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLE HPC 15 SP4 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | webkit2gtk3 +2 | 2.52.5-160000.1.1 | openSUSE-SU-2026:21508-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | webkitgtk4 +3 | 2.52.5-1.amzn2 | ALAS2-2026-3843 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | webkit2gtk3 +3 | 2.52.5-1.el9_8 | ELSA-2026-42062 |
| Oracle Linux 8 | webkit2gtk3 +3 | 2.52.5-1.el8_10 | ELSA-2026-74084, ELSA-2026-42088 |
Advisories 38
- ALSA-2026:74084 Critical: webkit2gtk3 security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:42062 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:42088 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2358 WebKitGTK: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 28, 2026
- WID-SEC-2026-2546 Apple Safari: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 22, 2026
- RHSA-2026:74084 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:59325 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:59326 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:58564 Red Hat Security Advisory: webkitgtk4 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:58550 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:57348 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:54634 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:54572 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:42088 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:42062 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RLSA-2026:74084 Critical: webkit2gtk3 security update Rocky Linux Security Advisories · Oct 1, 2026
- ELSA-2026-74084 Critical: webkit2gtk3 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 1, 2026
- WID-SEC-2026-2543 Apple macOS (Tahoe, Sonoma und Sequoia): Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 14, 2026
- WID-SEC-2026-2537 Apple iOS und iPadOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 14, 2026
- USN-8703-1 webkit2gtk vulnerabilities Ubuntu Security Notices (USN) · Aug 31, 2026
- SUSE-SU-2026:23133-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:23111-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3555-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 12, 2026
- ALAS2-2026-3843 Important: webkitgtk4 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 4, 2026
- openSUSE-SU-2026:21508-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 2, 2026
- SUSE-SU-2026:3396-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Jul 30, 2026
- SUSE-SU-2026:3338-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Jul 29, 2026
- NCSC-2026-0267 Kwetsbaarheden verholpen in Apple MacOS NCSC-NL (Netherlands) · Jul 28, 2026
- NCSC-2026-0266 Kwetsbaarheden verholpen in Apple iOS en iPadOS NCSC-NL (Netherlands) · Jul 28, 2026
- RLSA-2026:42062 Important: webkit2gtk3 security update Rocky Linux Security Advisories · Jul 22, 2026
- RLSA-2026:42088 Important: webkit2gtk3 security update Rocky Linux Security Advisories · Jul 21, 2026
- ELSA-2026-42062 Important: webkit2gtk3 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 20, 2026
- ELSA-2026-42088 Important: webkit2gtk3 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 20, 2026
- NCSC-2026-0215 Kwetsbaarheden verholpen in Apple iOS en iPadOS NCSC-NL (Netherlands) · Jun 30, 2026
- NCSC-2026-0214 Kwetsbaarheden verholpen in Apple MacOS NCSC-NL (Netherlands) · Jun 30, 2026
- WID-SEC-2026-2134 Apple iOS und iPadOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 29, 2026
- WID-SEC-2026-2131 Apple Safari: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 29, 2026
- WID-SEC-2026-2128 Apple macOS Tahoe: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 29, 2026