Ubuntu WebKitGTK Important XSS and DoS Vulnerabilities USN-8703

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Several security issues were fixed in WebKitGTK. Software Description: - 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 fixed in WebKitGTK.

Software Description:

- webkit2gtk: Web content engine library for GTK+

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.

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS libjavascriptcoregtk-4.1-0 2.52.6-0ubuntu0.26.04.1 libjavascriptcoregtk-6.0-1 2.52.6-0ubuntu0.26.04.1 libwebkit2gtk-4.1-0 2.52.6-0ubuntu0.26.04.1 libwebkitgtk-6.0-4 2.52.6-0ubuntu0.26.04.1 Ubuntu 24.04 LTS libjavascriptcoregtk-4.1-0 2.52.6-0ubuntu0.24.04.1 libjavascriptcoregtk-6.0-1 2.52.6-0ubuntu0.24.04.1 libwebkit2gtk-4.1-0 2.52.6-0ubuntu0.24.04.1 libwebkitgtk-6.0-4 2.52.6-0ubuntu0.24.04.1 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.

CVE-2026-28847, CVE-2026-28883, CVE-2026-28901, CVE-2026-28902,

CVE-2026-28903, CVE-2026-28904, CVE-2026-28905, CVE-2026-28907,

CVE-2026-28942, CVE-2026-28946, CVE-2026-28947, CVE-2026-28953,

CVE-2026-28955, CVE-2026-28958, CVE-2026-28984, CVE-2026-39872,

CVE-2026-43658, CVE-2026-43660, CVE-2026-43663, CVE-2026-43676,

CVE-2026-43699, CVE-2026-43701, CVE-2026-43705, CVE-2026-43707,

CVE-2026-43712, CVE-2026-43713, CVE-2026-43715, CVE-2026-43716,

CVE-2026-43720, CVE-2026-43721, CVE-2026-43725, CVE-2026-43726,

CVE-2026-43727, CVE-2026-43731, CVE-2026-43732, CVE-2026-43734,

CVE-2026-43740, CVE-2026-43742, CVE-2026-43745, CVE-2026-43804,

CVE-2026-64713, CVE-2026-64719, CVE-2026-64728, CVE-2026-64730,

CVE-2026-64757, CVE-2026-64783, CVE-2026-64787

Ubuntu Security Notice USN-8703-1

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