# CVE-2026-43699: webkit2gtk3: WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fix(es): * Mozilla:... CVE-2026-43699 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-43699, released July 19, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-43699 - Priority: High - CVSS: 9.6 (Important) - EPSS: 0.0039 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 29, 2026 ## Description WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fix(es): * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-39872) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43663) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43676) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43699) * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox (CVE-2026-43701) * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43707) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43712) * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713) * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43716) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43720) * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721) * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox (CVE-2026-43725) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43726) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43727) * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731) * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information (CVE-2026-43732) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43734) * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43742) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43745) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-javascriptcoregtk-4.1-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-javascriptcoregtk-4.1-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-javascriptcoregtk-6.0-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-javascriptcoregtk-6.0-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-webkit-6.0-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-webkit-6.0-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-webkit2-4.1-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-webkit2-4.1-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-4.0-bin-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-4.1-0-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libjavascriptcoregtk-4.1-0-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-6.0-1-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libjavascriptcoregtk-6.0-1-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | libjavascriptcoregtk-bin Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | [libjavascriptcoregtk-bin 2.52.6-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjavascriptcoregtk-bin-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | libjavascriptcoregtk-bin Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | [libjavascriptcoregtk-bin 2.52.6-0ubuntu0.26.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libjavascriptcoregtk-bin-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libwebkit2gtk-4.1-0-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libwebkit2gtk-4.1-0-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libwebkitgtk-6.0-4-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libwebkitgtk-6.0-4-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | webkit2gtk Debian 13.5 (trixie) | 2.52.5-1~deb13u1 | [DEBIAN-CVE-2026-43699](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43699.md) | Jul 19, 2026 | | Linux | webkit2gtk Debian 14 | 2.52.5-1 | [DEBIAN-CVE-2026-43699](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43699.md) | Jul 19, 2026 | | Linux | webkit2gtk-driver Ubuntu 24.04.5 LTS (noble) | 2.52.6-0ubuntu0.24.04.1 | [webkit2gtk-driver 2.52.6-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-webkit2gtk-driver-2.52.6-0ubuntu0.24.04.1.md) | Sep 3, 2026 | | Linux | webkit2gtk3 RHEL 8 | 0:2.54.0-1.el8_10 | [RHSA-2026:74084](https://patchblox.com/security/data/fix/linux/rhsa-2026-74084.md) | Jul 21, 2026 | | Linux | webkit2gtk3 RHEL 9 | 0:2.52.5-1.el9_8 | [RHSA-2026:42062](https://patchblox.com/security/data/fix/linux/rhsa-2026-42062.md) | Jul 21, 2026 | | Linux | webkit2gtk3 almalinux 8 | 2.54.0-1.el8_10 | [ALSA-2026:74084](https://patchblox.com/security/data/fix/linux/alsa-2026-74084.md) | Sep 30, 2026 | | Linux | webkit2gtk3 almalinux 9 | 2.52.5-1.el9_8 | [ALSA-2026:42062](https://patchblox.com/security/data/fix/linux/alsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3 ol 8 | 0:2.52.5-1.el8_10 | [ELSA-2026-42088](https://patchblox.com/security/data/fix/linux/elsa-2026-42088.md) | Jul 20, 2026 | | Linux | webkit2gtk3 ol 9 | 0:2.52.5-1.el9_8 | [ELSA-2026-42062](https://patchblox.com/security/data/fix/linux/elsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3 opensuse-leap 16.0 | 2.52.5-160000.1.1 | [OPENSUSE-SU-2026:21508-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21508-1.md) | Aug 1, 2026 | | Linux | webkit2gtk3 rocky 8 | 0:2.54.0-1.el8_10 | [RLSA-2026:74084](https://patchblox.com/security/data/fix/linux/rlsa-2026-74084.md) | Oct 1, 2026 | | Linux | webkit2gtk3 rocky 9 | 0:2.52.5-1.el9_8 | [RLSA-2026:42062](https://patchblox.com/security/data/fix/linux/rlsa-2026-42062.md) | Jul 22, 2026 | | Linux | webkit2gtk3 sles 15.6 | 2.52.5-150600.12.71.1 | [SUSE-SU-2026:3338-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3338-1.md) | Jul 28, 2026 | | Linux | webkit2gtk3 sles 15.7 | 2.52.5-150600.12.71.1 | [SUSE-SU-2026:3338-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3338-1.md) | Jul 28, 2026 | | Linux | webkit2gtk3 sles 16.0 | 2.52.5-160000.1.1 | [SUSE-SU-2026:23133-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23133-1.md) | Aug 1, 2026 | | Linux | webkit2gtk3-devel RHEL 8 | 0:2.54.0-1.el8_10 | [RHSA-2026:74084](https://patchblox.com/security/data/fix/linux/rhsa-2026-74084.md) | Jul 21, 2026 | | Linux | webkit2gtk3-devel RHEL 9 | 0:2.52.5-1.el9_8 | [RHSA-2026:42062](https://patchblox.com/security/data/fix/linux/rhsa-2026-42062.md) | Jul 21, 2026 | | Linux | webkit2gtk3-devel almalinux 8 | 2.54.0-1.el8_10 | [ALSA-2026:74084](https://patchblox.com/security/data/fix/linux/alsa-2026-74084.md) | Sep 30, 2026 | | Linux | webkit2gtk3-devel almalinux 9 | 2.52.5-1.el9_8 | [ALSA-2026:42062](https://patchblox.com/security/data/fix/linux/alsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3-devel ol 8 | 0:2.52.5-1.el8_10 | [ELSA-2026-42088](https://patchblox.com/security/data/fix/linux/elsa-2026-42088.md) | Jul 20, 2026 | | Linux | webkit2gtk3-devel ol 9 | 0:2.52.5-1.el9_8 | [ELSA-2026-42062](https://patchblox.com/security/data/fix/linux/elsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3-jsc RHEL 8 | 0:2.54.0-1.el8_10 | [RHSA-2026:74084](https://patchblox.com/security/data/fix/linux/rhsa-2026-74084.md) | Jul 21, 2026 | | Linux | webkit2gtk3-jsc RHEL 9 | 0:2.52.5-1.el9_8 | [RHSA-2026:42062](https://patchblox.com/security/data/fix/linux/rhsa-2026-42062.md) | Jul 21, 2026 | | Linux | webkit2gtk3-jsc almalinux 8 | 2.54.0-1.el8_10 | [ALSA-2026:74084](https://patchblox.com/security/data/fix/linux/alsa-2026-74084.md) | Sep 30, 2026 | | Linux | webkit2gtk3-jsc almalinux 9 | 2.52.5-1.el9_8 | [ALSA-2026:42062](https://patchblox.com/security/data/fix/linux/alsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3-jsc ol 8 | 0:2.52.5-1.el8_10 | [ELSA-2026-42088](https://patchblox.com/security/data/fix/linux/elsa-2026-42088.md) | Jul 20, 2026 | | Linux | webkit2gtk3-jsc ol 9 | 0:2.52.5-1.el9_8 | [ELSA-2026-42062](https://patchblox.com/security/data/fix/linux/elsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3-jsc-devel RHEL 8 | 0:2.54.0-1.el8_10 | [RHSA-2026:74084](https://patchblox.com/security/data/fix/linux/rhsa-2026-74084.md) | Jul 21, 2026 | | Linux | webkit2gtk3-jsc-devel RHEL 9 | 0:2.52.5-1.el9_8 | [RHSA-2026:42062](https://patchblox.com/security/data/fix/linux/rhsa-2026-42062.md) | Jul 21, 2026 | | Linux | webkit2gtk3-jsc-devel almalinux 8 | 2.54.0-1.el8_10 | [ALSA-2026:74084](https://patchblox.com/security/data/fix/linux/alsa-2026-74084.md) | Sep 30, 2026 | | Linux | webkit2gtk3-jsc-devel almalinux 9 | 2.52.5-1.el9_8 | [ALSA-2026:42062](https://patchblox.com/security/data/fix/linux/alsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3-jsc-devel ol 8 | 0:2.52.5-1.el8_10 | [ELSA-2026-42088](https://patchblox.com/security/data/fix/linux/elsa-2026-42088.md) | Jul 20, 2026 | | Linux | webkit2gtk3-jsc-devel ol 9 | 0:2.52.5-1.el9_8 | [ELSA-2026-42062](https://patchblox.com/security/data/fix/linux/elsa-2026-42062.md) | Jul 20, 2026 | | Linux | webkit2gtk3-soup2 opensuse-leap 16.0 | 2.52.5-160000.1.1 | [OPENSUSE-SU-2026:21508-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21508-1.md) | Aug 1, 2026 | | Linux | webkit2gtk3-soup2 sles 15.6 | 2.52.5-150600.12.71.1 | [SUSE-SU-2026:3338-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3338-1.md) | Jul 28, 2026 | | Linux | webkit2gtk3-soup2 sles 15.7 | 2.52.5-150600.12.71.1 | [SUSE-SU-2026:3338-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3338-1.md) | Jul 28, 2026 | | Linux | webkit2gtk4 opensuse-leap 16.0 | 2.52.5-160000.1.1 | [OPENSUSE-SU-2026:21508-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21508-1.md) | Aug 1, 2026 | | Linux | webkit2gtk4 sles 15.6 | 2.52.5-150600.12.71.1 | [SUSE-SU-2026:3338-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3338-1.md) | Jul 28, 2026 | | Linux | webkit2gtk4 sles 15.7 | 2.52.5-150600.12.71.1 | [SUSE-SU-2026:3338-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3338-1.md) | Jul 28, 2026 | | Linux | webkit2gtk4 sles 16.0 | 2.52.5-160000.1.1 | [SUSE-SU-2026:23133-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23133-1.md) | Aug 1, 2026 | | Linux | webkitgtk-webdriver Ubuntu 26.04.1 LTS (resolute) | 2.52.6-0ubuntu0.26.04.1 | [webkitgtk-webdriver 2.52.6-0ubuntu0.26.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-webkitgtk-webdriver-2.52.6-0ubuntu0.26.04.1.md) | Aug 20, 2026 | | Linux | wpewebkit Debian 14 | 2.52.5-1 | [DEBIAN-CVE-2026-43699](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43699.md) | Jul 19, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.