# CVE-2026-20652: WebKit: A remote attacker may be able to cause a denial-of-service

CVE-2026-20652 is fixed in 21 products on 2 platforms, first by Tahoe 26.3, released February 11, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-20652
- Priority: High
- CVSS: 8.8 (HIGH)
- EPSS: 0.0071
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 11, 2026
- Vendor advisory: https://support.apple.com/en-us/126348

## Description

The issue was addressed with improved memory handling. WebKit Bugzilla: 303959

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| macOS | Tahoe | 26.3 | [Tahoe 26.3](https://patchblox.com/security/data/fix/macos/tahoe-26.3.md) | Feb 11, 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-javascriptcoregtk-4.1-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-javascriptcoregtk-4.1-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-javascriptcoregtk-6.0-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-javascriptcoregtk-6.0-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-webkit-6.0-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-webkit-6.0-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-webkit2-4.1-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-webkit2-4.1-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-4.0-bin-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libjavascriptcoregtk-4.0-bin-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-4.1-0-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libjavascriptcoregtk-4.1-0-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-6.0-1-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libjavascriptcoregtk-6.0-1-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | libjavascriptcoregtk-bin Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | [libjavascriptcoregtk-bin 2.52.3-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-bin-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | libjavascriptcoregtk-bin Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | [libjavascriptcoregtk-bin 2.52.3-0ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libjavascriptcoregtk-bin-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libwebkit2gtk-4.1-0-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libwebkit2gtk-4.1-0-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libwebkitgtk-6.0-4-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libwebkitgtk-6.0-4-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | webkit2gtk Debian 12.15 (bookworm) | 2.50.6-1~deb12u1 | [DEBIAN-CVE-2026-20652](https://patchblox.com/security/data/fix/linux/debian-cve-2026-20652.md) | Feb 11, 2026 |
| Linux | webkit2gtk Debian 13.5 (trixie) | 2.50.6-1~deb13u1 | [DEBIAN-CVE-2026-20652](https://patchblox.com/security/data/fix/linux/debian-cve-2026-20652.md) | Feb 11, 2026 |
| Linux | webkit2gtk Debian 14 | 2.50.6-1 | [DEBIAN-CVE-2026-20652](https://patchblox.com/security/data/fix/linux/debian-cve-2026-20652.md) | Feb 11, 2026 |
| Linux | webkit2gtk-driver Ubuntu 24.04.5 LTS (noble) | 2.52.3-0ubuntu0.24.04.1 | [webkit2gtk-driver 2.52.3-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-webkit2gtk-driver-2.52.3-0ubuntu0.24.04.1.md) | Mar 24, 2026 |
| Linux | webkit2gtk-driver Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | [webkit2gtk-driver 2.52.3-0ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-webkit2gtk-driver-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | webkit2gtk3 RHEL 8 | 0:2.52.3-1.el8_10 | [RHSA-2026:10702](https://patchblox.com/security/data/fix/linux/rhsa-2026-10702.md) | Apr 30, 2026 |
| Linux | webkit2gtk3 RHEL 9 | 0:2.52.3-0.el9_7.1 | [RHSA-2026:9692](https://patchblox.com/security/data/fix/linux/rhsa-2026-9692.md) | Apr 30, 2026 |
| Linux | webkit2gtk3 almalinux 8 | 2.52.3-1.el8_10 | [ALSA-2026:10702](https://patchblox.com/security/data/fix/linux/alsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3 almalinux 9 | 2.52.3-1.el9_8 | [ALSA-2026:19206](https://patchblox.com/security/data/fix/linux/alsa-2026-19206.md) | May 19, 2026 |
| Linux | webkit2gtk3 ol 8 | 0:2.52.3-1.el8_10 | [ELSA-2026-10702](https://patchblox.com/security/data/fix/linux/elsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3 ol 9 | 0:2.52.3-0.el9_7.1 | [ELSA-2026-9692](https://patchblox.com/security/data/fix/linux/elsa-2026-9692.md) | Apr 22, 2026 |
| Linux | webkit2gtk3 opensuse-leap 15.6 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk3 opensuse-leap 16.0 | 2.52.1-160000.1.1 | [OPENSUSE-SU-2026:20518-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20518-1.md) | Apr 13, 2026 |
| Linux | webkit2gtk3 rocky 8 | 0:2.52.3-1.el8_10 | [RLSA-2026:10702](https://patchblox.com/security/data/fix/linux/rlsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3 rocky 9 | 0:2.52.3-1.el9_8 | [RLSA-2026:19206](https://patchblox.com/security/data/fix/linux/rlsa-2026-19206.md) | May 28, 2026 |
| Linux | webkit2gtk3 sles 15.6 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk3 sles 15.7 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk3 sles 16.0 | 2.52.1-160000.1.1 | [SUSE-SU-2026:21180-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-21180-1.md) | Apr 13, 2026 |
| Linux | webkit2gtk3-devel RHEL 8 | 0:2.52.3-1.el8_10 | [RHSA-2026:10702](https://patchblox.com/security/data/fix/linux/rhsa-2026-10702.md) | Apr 30, 2026 |
| Linux | webkit2gtk3-devel RHEL 9 | 0:2.52.3-0.el9_7.1 | [RHSA-2026:9692](https://patchblox.com/security/data/fix/linux/rhsa-2026-9692.md) | Apr 30, 2026 |
| Linux | webkit2gtk3-devel almalinux 8 | 2.52.3-1.el8_10 | [ALSA-2026:10702](https://patchblox.com/security/data/fix/linux/alsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3-devel almalinux 9 | 2.52.3-1.el9_8 | [ALSA-2026:19206](https://patchblox.com/security/data/fix/linux/alsa-2026-19206.md) | May 19, 2026 |
| Linux | webkit2gtk3-devel ol 8 | 0:2.52.3-1.el8_10 | [ELSA-2026-10702](https://patchblox.com/security/data/fix/linux/elsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3-devel ol 9 | 0:2.52.3-0.el9_7.1 | [ELSA-2026-9692](https://patchblox.com/security/data/fix/linux/elsa-2026-9692.md) | Apr 22, 2026 |
| Linux | webkit2gtk3-jsc RHEL 8 | 0:2.52.3-1.el8_10 | [RHSA-2026:10702](https://patchblox.com/security/data/fix/linux/rhsa-2026-10702.md) | Apr 30, 2026 |
| Linux | webkit2gtk3-jsc RHEL 9 | 0:2.52.3-0.el9_7.1 | [RHSA-2026:9692](https://patchblox.com/security/data/fix/linux/rhsa-2026-9692.md) | Apr 30, 2026 |
| Linux | webkit2gtk3-jsc almalinux 8 | 2.52.3-1.el8_10 | [ALSA-2026:10702](https://patchblox.com/security/data/fix/linux/alsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3-jsc almalinux 9 | 2.52.3-1.el9_8 | [ALSA-2026:19206](https://patchblox.com/security/data/fix/linux/alsa-2026-19206.md) | May 19, 2026 |
| Linux | webkit2gtk3-jsc ol 8 | 0:2.52.3-1.el8_10 | [ELSA-2026-10702](https://patchblox.com/security/data/fix/linux/elsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3-jsc ol 9 | 0:2.52.3-0.el9_7.1 | [ELSA-2026-9692](https://patchblox.com/security/data/fix/linux/elsa-2026-9692.md) | Apr 22, 2026 |
| Linux | webkit2gtk3-jsc-devel RHEL 8 | 0:2.52.3-1.el8_10 | [RHSA-2026:10702](https://patchblox.com/security/data/fix/linux/rhsa-2026-10702.md) | Apr 30, 2026 |
| Linux | webkit2gtk3-jsc-devel RHEL 9 | 0:2.52.3-0.el9_7.1 | [RHSA-2026:9692](https://patchblox.com/security/data/fix/linux/rhsa-2026-9692.md) | Apr 30, 2026 |
| Linux | webkit2gtk3-jsc-devel almalinux 8 | 2.52.3-1.el8_10 | [ALSA-2026:10702](https://patchblox.com/security/data/fix/linux/alsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3-jsc-devel almalinux 9 | 2.52.3-1.el9_8 | [ALSA-2026:19206](https://patchblox.com/security/data/fix/linux/alsa-2026-19206.md) | May 19, 2026 |
| Linux | webkit2gtk3-jsc-devel ol 8 | 0:2.52.3-1.el8_10 | [ELSA-2026-10702](https://patchblox.com/security/data/fix/linux/elsa-2026-10702.md) | Apr 27, 2026 |
| Linux | webkit2gtk3-jsc-devel ol 9 | 0:2.52.3-0.el9_7.1 | [ELSA-2026-9692](https://patchblox.com/security/data/fix/linux/elsa-2026-9692.md) | Apr 22, 2026 |
| Linux | webkit2gtk3-soup2 opensuse-leap 15.6 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk3-soup2 opensuse-leap 16.0 | 2.52.1-160000.1.1 | [OPENSUSE-SU-2026:20518-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20518-1.md) | Apr 13, 2026 |
| Linux | webkit2gtk3-soup2 sles 15.6 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk3-soup2 sles 15.7 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk4 opensuse-leap 15.6 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk4 opensuse-leap 16.0 | 2.52.1-160000.1.1 | [OPENSUSE-SU-2026:20518-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20518-1.md) | Apr 13, 2026 |
| Linux | webkit2gtk4 sles 15.6 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk4 sles 15.7 | 2.52.1-150600.12.63.1 | [SUSE-SU-2026:1364-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1364-1.md) | Apr 15, 2026 |
| Linux | webkit2gtk4 sles 16.0 | 2.52.1-160000.1.1 | [SUSE-SU-2026:21180-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-21180-1.md) | Apr 13, 2026 |
| Linux | webkitgtk-webdriver Ubuntu 25.10 (questing) | 2.52.3-0ubuntu0.25.10.1 | [webkitgtk-webdriver 2.52.3-0ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-webkitgtk-webdriver-2.52.3-0ubuntu0.25.10.1.md) | Mar 24, 2026 |
| Linux | wpewebkit Debian 14 | 2.50.6-1 | [DEBIAN-CVE-2026-20652](https://patchblox.com/security/data/fix/linux/debian-cve-2026-20652.md) | Feb 11, 2026 |

---

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