Ubuntu Security Notices USN-8237-1 USN-8237-1: WebKitGTK vulnerabilities Publication date 6 May 2026 Overview Several security issues were fixed in WebKitGTK. Releases 26.04 LTS 25.10 24.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages webkit2gtk - Web content engine library for GTK+ Details Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution. Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution. Update instructions This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart any applications that use WebKitGTK, such as Epiphany, to make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 26.04 LTS resolute libjavascriptcoregtk-4.1-0 – 2.52.3-0ubuntu0.26.04.2 libjavascriptcoregtk-6.0-1 – 2.52.3-0ubuntu0.26.04.2 libwebkit2gtk-4.1-0 – 2.52.3-0ubuntu0.26.04.2 libwebkitgtk-6.0-4 – 2.52.3-0ubuntu0.26.04.2 25.10 questing libjavascriptcoregtk-4.1-0 – 2.52.3-0ubuntu0.25.10.1 libjavascriptcoregtk-6.0-1 – 2.52.3-0ubuntu0.25.10.1 libwebkit2gtk-4.1-0 – 2.52.3-0ubuntu0.25.10.1 libwebkitgtk-6.0-4 – 2.52.3-0ubuntu0.25.10.1 24.04 LTS noble libjavascriptcoregtk-4.1-0 – 2.52.3-0ubuntu0.24.04.1 libjavascriptcoregtk-6.0-1 – 2.52.3-0ubuntu0.24.04.1 libwebkit2gtk-4.1-0 – 2.52.3-0ubuntu0.24.04.1 libwebkitgtk-6.0-4 – 2.52.3-0ubuntu0.24.04.1 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2026-28871 CVE-2026-28861 CVE-2026-28859 CVE-2026-28857 CVE-2026-20691 CVE-2026-20676 CVE-2026-20665 CVE-2026-20664 CVE-2026-20652 CVE-2026-20644 CVE-2026-28871 CVE-2026-28861 CVE-2026-28859 CVE-2026-28857 CVE-2026-20691 CVE-2026-20676 CVE-2026-20665 CVE-2026-20664 CVE-2026-20652 CVE-2026-20644 CVE-2026-20643 CVE-2026-20636 CVE-2026-20635 CVE-2026-20608 CVE-2025-46299 CVE-2025-43511 CVE-2025-43457 CVE-2025-43214 CVE-2025-43213 Show 9 more references Show less references