CVE-2026-28903
webkit2gtk: The issue was addressed with improved memory handling
CVE-2026-28903 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-28903, released May 11, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.8
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0039
33rd percentile
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected process crash.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gir1.2-javascriptcoregtk-4.1 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | gir1.2-javascriptcoregtk-4.1 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| gir1.2-javascriptcoregtk-4.1 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | gir1.2-javascriptcoregtk-4.1 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| gir1.2-javascriptcoregtk-6.0 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | gir1.2-javascriptcoregtk-6.0 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| gir1.2-javascriptcoregtk-6.0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | gir1.2-javascriptcoregtk-6.0 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| gir1.2-webkit-6.0 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | gir1.2-webkit-6.0 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| gir1.2-webkit-6.0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | gir1.2-webkit-6.0 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| gir1.2-webkit2-4.1 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | gir1.2-webkit2-4.1 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| gir1.2-webkit2-4.1 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | gir1.2-webkit2-4.1 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| libjavascriptcoregtk-4.0-bin · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | libjavascriptcoregtk-4.0-bin 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| libjavascriptcoregtk-4.1-0 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | libjavascriptcoregtk-4.1-0 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| libjavascriptcoregtk-4.1-0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | libjavascriptcoregtk-4.1-0 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| libjavascriptcoregtk-6.0-1 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | libjavascriptcoregtk-6.0-1 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| libjavascriptcoregtk-6.0-1 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | libjavascriptcoregtk-6.0-1 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| libjavascriptcoregtk-bin · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | libjavascriptcoregtk-bin 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| libjavascriptcoregtk-bin · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | libjavascriptcoregtk-bin 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| libwebkit2gtk-4.1-0 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | libwebkit2gtk-4.1-0 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| libwebkit2gtk-4.1-0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | libwebkit2gtk-4.1-0 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| libwebkitgtk-6.0-4 · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | libwebkitgtk-6.0-4 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| libwebkitgtk-6.0-4 · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | libwebkitgtk-6.0-4 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| webkit2gtk · Debian 13.5 (trixie) | 2.52.5-1~deb13u1 | DEBIAN-CVE-2026-28903 | May 11, 2026 |
| webkit2gtk · Debian 14 | 2.52.4-1 | DEBIAN-CVE-2026-28903 | May 11, 2026 |
| webkit2gtk-driver · Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | webkit2gtk-driver 2.52.6-0ubuntu0.24.04.1 | Sep 3, 2026 |
| webkit2gtk3 · RHEL 8 | 0:2.52.4-1.el8_10 | RHSA-2026:25918 | Jun 24, 2026 |
| webkit2gtk3 · RHEL 9 | 0:2.52.4-1.el9_8 | RHSA-2026:25927 | Jun 24, 2026 |
| webkit2gtk3 · almalinux 8 | 2.52.4-1.el8_10 | ALSA-2026:25918 | Jun 15, 2026 |
| webkit2gtk3 · almalinux 9 | 2.52.4-1.el9_8 | ALSA-2026:25927 | Jun 15, 2026 |
| webkit2gtk3 · ol 8 | 0:2.52.4-1.el8_10 | ELSA-2026-25918 | Jun 15, 2026 |
| webkit2gtk3 · ol 9 | 0:2.52.4-1.el9_8 | ELSA-2026-25927 | Jun 23, 2026 |
| webkit2gtk3 · opensuse-leap 16.0 | 2.52.4-160000.1.1 | OPENSUSE-SU-2026:21129-1 | Jun 20, 2026 |
| webkit2gtk3 · rocky 8 | 0:2.52.4-1.el8_10 | RLSA-2026:25918 | Jun 17, 2026 |
| webkit2gtk3 · rocky 9 | 0:2.52.4-1.el9_8 | RLSA-2026:25927 | Jun 17, 2026 |
| webkit2gtk3 · sles 15.6 | 2.52.4-150600.12.68.1 | SUSE-SU-2026:2376-1 | Jun 11, 2026 |
| webkit2gtk3 · sles 15.7 | 2.52.4-150600.12.68.1 | SUSE-SU-2026:2376-1 | Jun 11, 2026 |
| webkit2gtk3 · sles 16.0 | 2.52.4-160000.1.1 | SUSE-SU-2026:22212-1 | Jun 20, 2026 |
| webkit2gtk3-devel · RHEL 8 | 0:2.52.4-1.el8_10 | RHSA-2026:25918 | Jun 24, 2026 |
| webkit2gtk3-devel · RHEL 9 | 0:2.52.4-1.el9_8 | RHSA-2026:25927 | Jun 24, 2026 |
| webkit2gtk3-devel · almalinux 8 | 2.52.4-1.el8_10 | ALSA-2026:25918 | Jun 15, 2026 |
| webkit2gtk3-devel · almalinux 9 | 2.52.4-1.el9_8 | ALSA-2026:25927 | Jun 15, 2026 |
| webkit2gtk3-devel · ol 8 | 0:2.52.4-1.el8_10 | ELSA-2026-25918 | Jun 15, 2026 |
| webkit2gtk3-devel · ol 9 | 0:2.52.4-1.el9_8 | ELSA-2026-25927 | Jun 23, 2026 |
| webkit2gtk3-jsc · RHEL 8 | 0:2.52.4-1.el8_10 | RHSA-2026:25918 | Jun 24, 2026 |
| webkit2gtk3-jsc · RHEL 9 | 0:2.52.4-1.el9_8 | RHSA-2026:25927 | Jun 24, 2026 |
| webkit2gtk3-jsc · almalinux 8 | 2.52.4-1.el8_10 | ALSA-2026:25918 | Jun 15, 2026 |
| webkit2gtk3-jsc · almalinux 9 | 2.52.4-1.el9_8 | ALSA-2026:25927 | Jun 15, 2026 |
| webkit2gtk3-jsc · ol 8 | 0:2.52.4-1.el8_10 | ELSA-2026-25918 | Jun 15, 2026 |
| webkit2gtk3-jsc · ol 9 | 0:2.52.4-1.el9_8 | ELSA-2026-25927 | Jun 23, 2026 |
| webkit2gtk3-jsc-devel · RHEL 8 | 0:2.52.4-1.el8_10 | RHSA-2026:25918 | Jun 24, 2026 |
| webkit2gtk3-jsc-devel · RHEL 9 | 0:2.52.4-1.el9_8 | RHSA-2026:25927 | Jun 24, 2026 |
| webkit2gtk3-jsc-devel · almalinux 8 | 2.52.4-1.el8_10 | ALSA-2026:25918 | Jun 15, 2026 |
| webkit2gtk3-jsc-devel · almalinux 9 | 2.52.4-1.el9_8 | ALSA-2026:25927 | Jun 15, 2026 |
| webkit2gtk3-jsc-devel · ol 8 | 0:2.52.4-1.el8_10 | ELSA-2026-25918 | Jun 15, 2026 |
| webkit2gtk3-jsc-devel · ol 9 | 0:2.52.4-1.el9_8 | ELSA-2026-25927 | Jun 23, 2026 |
| webkit2gtk3-soup2 · opensuse-leap 16.0 | 2.52.4-160000.1.1 | OPENSUSE-SU-2026:21129-1 | Jun 20, 2026 |
| webkit2gtk3-soup2 · sles 15.6 | 2.52.4-150600.12.68.1 | SUSE-SU-2026:2376-1 | Jun 11, 2026 |
| webkit2gtk3-soup2 · sles 15.7 | 2.52.4-150600.12.68.1 | SUSE-SU-2026:2376-1 | Jun 11, 2026 |
| webkit2gtk4 · opensuse-leap 16.0 | 2.52.4-160000.1.1 | OPENSUSE-SU-2026:21129-1 | Jun 20, 2026 |
| webkit2gtk4 · sles 15.6 | 2.52.4-150600.12.68.1 | SUSE-SU-2026:2376-1 | Jun 11, 2026 |
| webkit2gtk4 · sles 15.7 | 2.52.4-150600.12.68.1 | SUSE-SU-2026:2376-1 | Jun 11, 2026 |
| webkit2gtk4 · sles 16.0 | 2.52.4-160000.1.1 | SUSE-SU-2026:22212-1 | Jun 20, 2026 |
| webkitgtk-webdriver · Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | webkitgtk-webdriver 2.52.6-0ubuntu0.26.04.1 | Aug 20, 2026 |
| wpewebkit · Debian 14 | 2.52.4-1 | DEBIAN-CVE-2026-28903 | May 11, 2026 |
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