USN-7941-1: WebKitGTK vulnerabilities

Published Jan 5, 2026
·
Updated

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.

Affected Software

36 affected componentsFixes available
All of the following
ubuntu/libjavascriptcoregtk-4.1-0<2.50.3-0ubuntu0.25.10.1
2.50.3-0ubuntu0.25.10.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/libjavascriptcoregtk-6.0-1<2.50.3-0ubuntu0.25.10.1
2.50.3-0ubuntu0.25.10.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/libwebkit2gtk-4.1-0<2.50.3-0ubuntu0.25.10.1
2.50.3-0ubuntu0.25.10.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/libwebkitgtk-6.0-4<2.50.3-0ubuntu0.25.10.1
2.50.3-0ubuntu0.25.10.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/libjavascriptcoregtk-4.1-0<2.50.3-0ubuntu0.25.04.1
2.50.3-0ubuntu0.25.04.1
Ubuntu Ubuntu=25.04
All of the following
ubuntu/libjavascriptcoregtk-6.0-1<2.50.3-0ubuntu0.25.04.1
2.50.3-0ubuntu0.25.04.1
Ubuntu Ubuntu=25.04
All of the following
ubuntu/libwebkit2gtk-4.1-0<2.50.3-0ubuntu0.25.04.1
2.50.3-0ubuntu0.25.04.1
Ubuntu Ubuntu=25.04
All of the following
ubuntu/libwebkitgtk-6.0-4<2.50.3-0ubuntu0.25.04.1
2.50.3-0ubuntu0.25.04.1
Ubuntu Ubuntu=25.04
All of the following
ubuntu/libjavascriptcoregtk-4.1-0<2.50.3-0ubuntu0.24.04.1
2.50.3-0ubuntu0.24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/libjavascriptcoregtk-6.0-1<2.50.3-0ubuntu0.24.04.1
2.50.3-0ubuntu0.24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/libwebkit2gtk-4.1-0<2.50.3-0ubuntu0.24.04.1
2.50.3-0ubuntu0.24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/libwebkitgtk-6.0-4<2.50.3-0ubuntu0.24.04.1
2.50.3-0ubuntu0.24.04.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/libjavascriptcoregtk-4.0-18<2.50.3-0ubuntu0.22.04.1
2.50.3-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/libjavascriptcoregtk-4.1-0<2.50.3-0ubuntu0.22.04.1
2.50.3-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/libjavascriptcoregtk-6.0-1<2.50.3-0ubuntu0.22.04.1
2.50.3-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/libwebkit2gtk-4.0-37<2.50.3-0ubuntu0.22.04.1
2.50.3-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/libwebkit2gtk-4.1-0<2.50.3-0ubuntu0.22.04.1
2.50.3-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/libwebkitgtk-6.0-4<2.50.3-0ubuntu0.22.04.1
2.50.3-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.10.1
  2. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-6.0-1 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.10.1
  3. Upgrade

    Upgrade ubuntu/libwebkit2gtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.10.1
  4. Upgrade

    Upgrade ubuntu/libwebkitgtk-6.0-4 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.10.1
  5. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.04.1
  6. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-6.0-1 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.04.1
  7. Upgrade

    Upgrade ubuntu/libwebkit2gtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.04.1
  8. Upgrade

    Upgrade ubuntu/libwebkitgtk-6.0-4 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.25.04.1
  9. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.24.04.1
  10. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-6.0-1 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.24.04.1
  11. Upgrade

    Upgrade ubuntu/libwebkit2gtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.24.04.1
  12. Upgrade

    Upgrade ubuntu/libwebkitgtk-6.0-4 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.24.04.1
  13. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-4.0-18 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.22.04.1
  14. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.22.04.1
  15. Upgrade

    Upgrade ubuntu/libjavascriptcoregtk-6.0-1 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.22.04.1
  16. Upgrade

    Upgrade ubuntu/libwebkit2gtk-4.0-37 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.22.04.1
  17. Upgrade

    Upgrade ubuntu/libwebkit2gtk-4.1-0 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.22.04.1
  18. Upgrade

    Upgrade ubuntu/libwebkitgtk-6.0-4 to a version that resolves this vulnerability.

    Fixed in 2.50.3-0ubuntu0.22.04.1

Event History

Jan 5, 2026
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

Who is exposed to these issues?

Ubuntu systems using the listed WebKitGTK or JavaScriptCoreGTK packages are affected by this advisory. Exposure occurs when a user views attacker-controlled or malicious web content.

2

What does an attacker need to exploit the vulnerabilities?

The attacker must persuade a user to visit a malicious website. The issues can then be exploited remotely through the browser's web and JavaScript engine processing.

3

What impact could exploitation have?

The reported impacts include cross-site scripting, denial of service, and arbitrary code execution.

Company

Resources

Contact

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