CVE-2026-20665
WebKit: Processing maliciously crafted web content may prevent Content Security Policy from being enforced
CVE-2026-20665 is fixed in 21 products on 2 platforms, first by Tahoe 26.4, released March 24, 2026. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
8.8
MEDIUM
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0063
50th percentile
This issue was addressed through improved state management. WebKit Bugzilla: 304951
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| macOS | |||
| Tahoe | 26.4 | Tahoe 26.4 | Mar 24, 2026 |
| Linux | |||
| gir1.2-javascriptcoregtk-4.1 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | gir1.2-javascriptcoregtk-4.1 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| gir1.2-javascriptcoregtk-4.1 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | gir1.2-javascriptcoregtk-4.1 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| gir1.2-javascriptcoregtk-4.1 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | gir1.2-javascriptcoregtk-4.1 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| gir1.2-javascriptcoregtk-6.0 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | gir1.2-javascriptcoregtk-6.0 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| gir1.2-javascriptcoregtk-6.0 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | gir1.2-javascriptcoregtk-6.0 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| gir1.2-javascriptcoregtk-6.0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | gir1.2-javascriptcoregtk-6.0 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| gir1.2-webkit-6.0 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | gir1.2-webkit-6.0 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| gir1.2-webkit-6.0 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | gir1.2-webkit-6.0 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| gir1.2-webkit-6.0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | gir1.2-webkit-6.0 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| gir1.2-webkit2-4.1 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | gir1.2-webkit2-4.1 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| gir1.2-webkit2-4.1 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | gir1.2-webkit2-4.1 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| gir1.2-webkit2-4.1 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | gir1.2-webkit2-4.1 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| libjavascriptcoregtk-4.0-bin · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | libjavascriptcoregtk-4.0-bin 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| libjavascriptcoregtk-4.0-bin · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | libjavascriptcoregtk-4.0-bin 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| libjavascriptcoregtk-4.1-0 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | libjavascriptcoregtk-4.1-0 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| libjavascriptcoregtk-4.1-0 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | libjavascriptcoregtk-4.1-0 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| libjavascriptcoregtk-4.1-0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | libjavascriptcoregtk-4.1-0 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| libjavascriptcoregtk-6.0-1 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | libjavascriptcoregtk-6.0-1 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| libjavascriptcoregtk-6.0-1 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | libjavascriptcoregtk-6.0-1 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| libjavascriptcoregtk-6.0-1 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | libjavascriptcoregtk-6.0-1 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| libjavascriptcoregtk-bin · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | libjavascriptcoregtk-bin 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| libjavascriptcoregtk-bin · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | libjavascriptcoregtk-bin 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| libjavascriptcoregtk-bin · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | libjavascriptcoregtk-bin 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| libwebkit2gtk-4.1-0 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | libwebkit2gtk-4.1-0 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| libwebkit2gtk-4.1-0 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | libwebkit2gtk-4.1-0 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| libwebkit2gtk-4.1-0 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | libwebkit2gtk-4.1-0 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| libwebkitgtk-6.0-4 · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | libwebkitgtk-6.0-4 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| libwebkitgtk-6.0-4 · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | libwebkitgtk-6.0-4 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| libwebkitgtk-6.0-4 · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | libwebkitgtk-6.0-4 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| webkit2gtk · Debian 13.5 (trixie) | 2.52.3-2~deb13u1 | DEBIAN-CVE-2026-20665 | Mar 25, 2026 |
| webkit2gtk · Debian 14 | 2.52.1-1 | DEBIAN-CVE-2026-20665 | Mar 25, 2026 |
| webkit2gtk-driver · Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | webkit2gtk-driver 2.52.3-0ubuntu0.24.04.1 | Mar 24, 2026 |
| webkit2gtk-driver · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | webkit2gtk-driver 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| webkit2gtk3 · RHEL 8 | 0:2.52.3-1.el8_10 | RHSA-2026:10702 | Apr 30, 2026 |
| webkit2gtk3 · RHEL 9 | 0:2.52.3-0.el9_7.1 | RHSA-2026:9692 | Apr 30, 2026 |
| webkit2gtk3 · almalinux 8 | 2.52.3-1.el8_10 | ALSA-2026:10702 | Apr 27, 2026 |
| webkit2gtk3 · almalinux 9 | 2.52.3-1.el9_8 | ALSA-2026:19206 | May 19, 2026 |
| webkit2gtk3 · ol 8 | 0:2.52.3-1.el8_10 | ELSA-2026-10702 | Apr 27, 2026 |
| webkit2gtk3 · ol 9 | 0:2.52.3-0.el9_7.1 | ELSA-2026-9692 | Apr 22, 2026 |
| webkit2gtk3 · opensuse-leap 15.6 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk3 · opensuse-leap 16.0 | 2.52.1-160000.1.1 | OPENSUSE-SU-2026:20518-1 | Apr 13, 2026 |
| webkit2gtk3 · rocky 8 | 0:2.52.3-1.el8_10 | RLSA-2026:10702 | Apr 27, 2026 |
| webkit2gtk3 · rocky 9 | 0:2.52.3-1.el9_8 | RLSA-2026:19206 | May 28, 2026 |
| webkit2gtk3 · sles 15.6 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk3 · sles 15.7 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk3 · sles 16.0 | 2.52.1-160000.1.1 | SUSE-SU-2026:21180-1 | Apr 13, 2026 |
| webkit2gtk3-devel · RHEL 8 | 0:2.52.3-1.el8_10 | RHSA-2026:10702 | Apr 30, 2026 |
| webkit2gtk3-devel · RHEL 9 | 0:2.52.3-0.el9_7.1 | RHSA-2026:9692 | Apr 30, 2026 |
| webkit2gtk3-devel · almalinux 8 | 2.52.3-1.el8_10 | ALSA-2026:10702 | Apr 27, 2026 |
| webkit2gtk3-devel · almalinux 9 | 2.52.3-1.el9_8 | ALSA-2026:19206 | May 19, 2026 |
| webkit2gtk3-devel · ol 8 | 0:2.52.3-1.el8_10 | ELSA-2026-10702 | Apr 27, 2026 |
| webkit2gtk3-devel · ol 9 | 0:2.52.3-0.el9_7.1 | ELSA-2026-9692 | Apr 22, 2026 |
| webkit2gtk3-jsc · RHEL 8 | 0:2.52.3-1.el8_10 | RHSA-2026:10702 | Apr 30, 2026 |
| webkit2gtk3-jsc · RHEL 9 | 0:2.52.3-0.el9_7.1 | RHSA-2026:9692 | Apr 30, 2026 |
| webkit2gtk3-jsc · almalinux 8 | 2.52.3-1.el8_10 | ALSA-2026:10702 | Apr 27, 2026 |
| webkit2gtk3-jsc · almalinux 9 | 2.52.3-1.el9_8 | ALSA-2026:19206 | May 19, 2026 |
| webkit2gtk3-jsc · ol 8 | 0:2.52.3-1.el8_10 | ELSA-2026-10702 | Apr 27, 2026 |
| webkit2gtk3-jsc · ol 9 | 0:2.52.3-0.el9_7.1 | ELSA-2026-9692 | Apr 22, 2026 |
| webkit2gtk3-jsc-devel · RHEL 8 | 0:2.52.3-1.el8_10 | RHSA-2026:10702 | Apr 30, 2026 |
| webkit2gtk3-jsc-devel · RHEL 9 | 0:2.52.3-0.el9_7.1 | RHSA-2026:9692 | Apr 30, 2026 |
| webkit2gtk3-jsc-devel · almalinux 8 | 2.52.3-1.el8_10 | ALSA-2026:10702 | Apr 27, 2026 |
| webkit2gtk3-jsc-devel · almalinux 9 | 2.52.3-1.el9_8 | ALSA-2026:19206 | May 19, 2026 |
| webkit2gtk3-jsc-devel · ol 8 | 0:2.52.3-1.el8_10 | ELSA-2026-10702 | Apr 27, 2026 |
| webkit2gtk3-jsc-devel · ol 9 | 0:2.52.3-0.el9_7.1 | ELSA-2026-9692 | Apr 22, 2026 |
| webkit2gtk3-soup2 · opensuse-leap 15.6 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk3-soup2 · opensuse-leap 16.0 | 2.52.1-160000.1.1 | OPENSUSE-SU-2026:20518-1 | Apr 13, 2026 |
| webkit2gtk3-soup2 · sles 15.6 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk3-soup2 · sles 15.7 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk4 · opensuse-leap 15.6 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk4 · opensuse-leap 16.0 | 2.52.1-160000.1.1 | OPENSUSE-SU-2026:20518-1 | Apr 13, 2026 |
| webkit2gtk4 · sles 15.6 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk4 · sles 15.7 | 2.52.1-150600.12.63.1 | SUSE-SU-2026:1364-1 | Apr 15, 2026 |
| webkit2gtk4 · sles 16.0 | 2.52.1-160000.1.1 | SUSE-SU-2026:21180-1 | Apr 13, 2026 |
| webkitgtk-webdriver · Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | webkitgtk-webdriver 2.52.3-0ubuntu0.25.10.1 | Mar 24, 2026 |
| webkitgtk-webdriver · Ubuntu 26.04.1 LTS (resolute) | 2.52.3-0ubuntu0.26.04.2 | webkitgtk-webdriver 2.52.3-0ubuntu0.26.04.2 | Mar 24, 2026 |
| wpewebkit · Debian 14 | 2.52.1-1 | DEBIAN-CVE-2026-20665 | Mar 25, 2026 |
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