Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, Safari 27, iOS 26.6 and iPadOS 26.6, iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, visionOS 27, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | Safari | < 26.6, < 27 | 26.6 |
| Apple | iOS and iPadOS | < 26.6, < 26.7, < 27 | 26.6 |
| Apple | macOS | < 26.6, < 27 | 26.6 |
| Apple | tvOS | < 26.6 | 26.6 |
| Apple | visionOS | < 26.6, < 27 | 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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | webkit2gtk3 +3 | 2.54.0-1.el9_8 | RHSA-2026:69098 |
| RHEL 8 | webkit2gtk3 +3 | 2.54.0-1.el8_10 | RHSA-2026:74084 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.6 EUS | webkit2gtk3 +3 | 2.54.0-1.el9_6 | RHSA-2026:89821 |
| RHEL 9.4 E4S | webkit2gtk3 +3 | 2.54.0-1.el9_4 | RHSA-2026:92216 |
| RHEL 9.2 E4S | webkit2gtk3 +3 | 2.54.0-1.el9_2 | RHSA-2026:89822 |
| RHEL 8.8 TUS | webkit2gtk3 +3 | 2.54.0-1.el8_8 | RHSA-2026:93435 |
| RHEL 8.8 E4S | webkit2gtk3 +3 | 2.54.0-1.el8_8 | RHSA-2026:93435 |
| RHEL 8.6 EUS Long Life | webkit2gtk3 +3 | 2.54.0-1.el8_6 | RHSA-2026:92339 |
| RHEL 8.6 AUS | webkit2gtk3 +3 | 2.54.0-1.el8_6 | RHSA-2026:92339 |
| RHEL 8.4 EUS Long Life | webkit2gtk3 +3 | 2.54.0-1.el8_4 | RHSA-2026:95403 |
| RHEL 8.4 AUS | webkit2gtk3 +3 | 2.54.0-1.el8_4 | RHSA-2026:95403 |
| RHEL 7 ELS | webkitgtk4 +4 | 2.54.0-1.el7_9 | RHSA-2026:91631 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | webkit2gtk3 +3 | 2.54.0-1.el9_8 | ALSA-2026:69098 |
| AlmaLinux 8 | webkit2gtk3 +3 | 2.54.0-1.el8_10 | ALSA-2026:74084 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | webkit2gtk3 | 2.54.0-1.el9_8 | RLSA-2026:69098 |
| Rocky Linux 8 | webkit2gtk3 | 2.54.0-1.el8_10 | RLSA-2026:74084 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | webkit2gtk3 | 2.54.1-150600.12.81.3 | SUSE-SU-2026:4858-1 |
| SLES 15 SP7 | webkit2gtk4 +1 | 2.54.1-150600.12.81.4 | SUSE-SU-2026:4858-1 |
| SLES 15 SP6 | webkit2gtk3 | 2.54.1-150600.12.81.3 | SUSE-SU-2026:4858-1 |
| SLES 15 SP6 | webkit2gtk4 +1 | 2.54.1-150600.12.81.4 | SUSE-SU-2026:4858-1 |
| SLES 15 SP5 | webkit2gtk3 +1 | 2.54.1-150400.4.157.4 | SUSE-SU-2026:4868-1 |
| SLES 15 SP5 | webkit2gtk3-soup2 | 2.54.1-150400.4.157.5 | SUSE-SU-2026:4868-1 |
| SLES 15 SP4 | webkit2gtk3 +1 | 2.54.1-150400.4.157.4 | SUSE-SU-2026:4868-1 |
| SLES 15 SP4 | webkit2gtk3-soup2 | 2.54.1-150400.4.157.5 | SUSE-SU-2026:4868-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | webkit2gtk3 | 2.54.1-150600.12.81.3 | SUSE-SU-2026:4858-1 |
| SLES for SAP 15 SP6 | webkit2gtk4 +1 | 2.54.1-150600.12.81.4 | SUSE-SU-2026:4858-1 |
| SLES for SAP 15 SP5 | webkit2gtk3 +1 | 2.54.1-150400.4.157.4 | SUSE-SU-2026:4868-1 |
| SLES for SAP 15 SP5 | webkit2gtk3-soup2 | 2.54.1-150400.4.157.5 | SUSE-SU-2026:4868-1 |
| SLES for SAP 15 SP4 | webkit2gtk3 +1 | 2.54.1-150400.4.157.4 | SUSE-SU-2026:4868-1 |
| SLES for SAP 15 SP4 | webkit2gtk3-soup2 | 2.54.1-150400.4.157.5 | SUSE-SU-2026:4868-1 |
| SLE HPC 15 SP5 | webkit2gtk3 +1 | 2.54.1-150400.4.157.4 | SUSE-SU-2026:4868-1 |
| SLE HPC 15 SP5 | webkit2gtk3-soup2 | 2.54.1-150400.4.157.5 | SUSE-SU-2026:4868-1 |
| SLE HPC 15 SP4 | webkit2gtk3 +1 | 2.54.1-150400.4.157.4 | SUSE-SU-2026:4868-1 |
| SLE HPC 15 SP4 | webkit2gtk3-soup2 | 2.54.1-150400.4.157.5 | SUSE-SU-2026:4868-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | webkit2gtk3 +3 | 2.54.0-1.el9_8 | ELSA-2026-69098 |
| Oracle Linux 8 | webkit2gtk3 +3 | 2.54.0-1.el8_10 | ELSA-2026-74084 |
Advisories 25
- RHSA-2026:92216 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:74084 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:91631 Red Hat Security Advisory: webkitgtk4 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:89822 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:89821 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:93435 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:95403 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:92339 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:69098 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- ALSA-2026:74084 Critical: webkit2gtk3 security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:69098 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-3352 Apple iOS, iPadOS, macOS Tahoe, macOS Golden Gate, macOS Sequoia und Safari: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 26, 2026
- SUSE-SU-2026:4868-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Oct 23, 2026
- WID-SEC-2026-2546 Apple Safari: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 22, 2026
- SUSE-SU-2026:4858-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Oct 22, 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
- RLSA-2026:69098 Important: webkit2gtk3 security update Rocky Linux Security Advisories · Sep 22, 2026
- ELSA-2026-69098 Important: webkit2gtk3 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 21, 2026
- NCSC-2026-0371 Kwetsbaarheden verholpen in Apple macOS en Samba door Apple en Samba NCSC-NL (Netherlands) · Sep 15, 2026
- NCSC-2026-0370 Kwetsbaarheden verholpen in Apple iOS en iPadOS NCSC-NL (Netherlands) · Sep 15, 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
- 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
References
- https://support.apple.com/en-us/128066
- https://support.apple.com/en-us/128067
- https://support.apple.com/en-us/128068
- https://support.apple.com/en-us/128069
- https://support.apple.com/en-us/128070
- https://support.apple.com/en-us/128073
- https://support.apple.com/en-us/149034
- https://support.apple.com/en-us/149035
- https://support.apple.com/en-us/149038
- https://support.apple.com/en-us/149039
- https://support.apple.com/en-us/149041