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Ubuntu 25.10: Critical WebKitGTK Security Updates USN-7941-1 CVE-2025-13947

ubuntu
Calendar Grey January 5, 2026
Dist Ubuntu Esm H88
Multiple critical security issues fixed in WebKitGTK for Ubuntu, affecting several versions with essential updates required.
Several security issues were fixed in WebKitGTK.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: 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.

Topics%20covered

Topics Covered

security advisory denial of service cross site scripting Ubuntu important webkitgtk

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libjavascriptcoregtk-4.1-0 2.50.3-0ubuntu0.25.10.1 libjavascriptcoregtk-6.0-1 2.50.3-0ubuntu0.25.10.1 libwebkit2gtk-4.1-0 2.50.3-0ubuntu0.25.10.1 libwebkitgtk-6.0-4 2.50.3-0ubuntu0.25.10.1 Ubuntu 25.04 libjavascriptcoregtk-4.1-0 2.50.3-0ubuntu0.25.04.1 libjavascriptcoregtk-6.0-1 2.50.3-0ubuntu0.25.04.1 libwebkit2gtk-4.1-0 2.50.3-0ubuntu0.25.04.1 libwebkitgtk-6.0-4 2.50.3-0ubuntu0.25.04.1 Ubuntu 24.04 LTS libjavascriptcoregtk-4.1-0 2.50.3-0ubuntu0.24.04.1 libjavascriptcoregtk-6.0-1 2.50.3-0ubuntu0.24.04.1 libwebkit2gtk-4.1-0 2.50.3-0ubuntu0.24.04.1 libwebkitgtk-6.0-4 2.50.3-0ubuntu0.24.04.1 Ubuntu 22.04 LTS libjavascriptcoregtk-4.0-18 2.50.3-0ubuntu0.22.04.1 libjavascriptcoregtk-4.1-0 2.50.3-0ubuntu0.22.04.1 libjavascriptcoregtk-6.0-1 2.50.3-0ubuntu0.22.04.1 libwebkit2gtk-4.0-37 2.50.3-0ubuntu0.22.04.1 libwebkit2gtk-4.1-0 2.50.3-0ubuntu0.22.04.1 libwebkitgtk-6.0-4 2.50.3-0ubuntu0.22.04.1 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.

References

https://ubuntu.com/security/notices/USN-7941-1

CVE-2025-13947, CVE-2025-43421, CVE-2025-43458, CVE-2025-66287

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7941-1

Topics%20covered

Topics Covered

security advisory denial of service cross site scripting Ubuntu important webkitgtk

Package Information

https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.3-0ubuntu0.25.10.1 https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.3-0ubuntu0.25.04.1 https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.3-0ubuntu0.24.04.1 https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.3-0ubuntu0.22.04.1

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