RHSA-2026:69098HighCVSS 9.0

Red Hat Security Advisory: webkit2gtk3 security update

Published
September 21, 2026
Last Modified
September 21, 2026

🔗 CVE IDs covered (37)

CVE-2026-19161 →CVE-2026-64718 →CVE-2026-64730 →CVE-2026-64782 →CVE-2026-65332 →CVE-2026-84635 →CVE-2026-19176 →CVE-2026-64779 →CVE-2026-64787 →CVE-2026-65331 →CVE-2026-83596 →CVE-2026-19173 →CVE-2026-43804 →CVE-2026-64713 →CVE-2026-64753 →CVE-2026-65341 →CVE-2026-19154 →CVE-2026-43795 →CVE-2026-64728 →CVE-2026-64757 →CVE-2026-65335 →CVE-2026-65336 →CVE-2026-65337 →CVE-2026-65340 →CVE-2026-64715 →CVE-2026-64780 →CVE-2026-65338 →CVE-2026-76041 →CVE-2026-78376 →CVE-2026-79020 →CVE-2026-84359 →CVE-2026-64783 →CVE-2026-64784 →CVE-2026-64778 →CVE-2026-65334 →CVE-2026-28984 →CVE-2026-65351 →

📋 Description

CVE-2026-19154 — chromium-browser: skia: chromium-browser: Use after free in Skia CVE-2026-19161 — chromium-browser: skia: chromium-browser: skia: Cross-origin data leakage via uninitialized use CVE-2026-19173 — chromium-browser: skia: chromium-browser: skia: Out of bounds write in Skia CVE-2026-19176 — chromium-browser: skia: chromium-browser: skia: Arbitrary code execution via crafted HTML page CVE-2026-28984 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-43795 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-43804 — webkitgtk: Visiting a website may lead to an app denial-of-service CVE-2026-64713 — webkitgtk: Websites may know if the user has visited a given link CVE-2026-64715 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-64718 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-64728 — webkitgtk: Maliciously crafted web content may violate iframe sandboxing policy CVE-2026-64730 — webkitgtk: Visiting a website that frames malicious content may lead to UI spoofing CVE-2026-64753 — webkitgtk: Processing maliciously crafted web content may disclose sensitive user information CVE-2026-64757 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-64778 — webkitgtk: Visiting a maliciously crafted website may leak sensitive data CVE-2026-64779 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-64780 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-64782 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-64783 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-64784 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-64787 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination CVE-2026-65331 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65332 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65334 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65335 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65336 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65337 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65338 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65340 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-65341 — webkitgtk: Processing maliciously crafted web content may lead to memory corruption CVE-2026-65351 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-76041 — chromium-browser: skia: chromium-browser: skia: Information leak in Skia CVE-2026-78376 — webkitgtk: use-after-free of JSCValue function parameters CVE-2026-79020 — chromium-browser: skia: chromium-browser: skia: Out of bounds read in Skia CVE-2026-83596 — webkitgtk: Validate the full FeatureList array once in OpenTypeVerticalData findFeature CVE-2026-84359 — chromium-browser: skia: chromium-browser: Information leak in Skia CVE-2026-84635 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination

🎯 Affected products47

  • Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-0:2.54.0-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-0:2.54.0-1.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-0:2.54.0-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-0:2.54.0-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-0:2.54.0-1.el9_8.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-0:2.54.0-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debuginfo-0:2.54.0-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debuginfo-0:2.54.0-1.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debuginfo-0:2.54.0-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debuginfo-0:2.54.0-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debuginfo-0:2.54.0-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debugsource-0:2.54.0-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debugsource-0:2.54.0-1.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debugsource-0:2.54.0-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debugsource-0:2.54.0-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-debugsource-0:2.54.0-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-0:2.54.0-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-0:2.54.0-1.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-0:2.54.0-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-0:2.54.0-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-0:2.54.0-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-debuginfo-0:2.54.0-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-debuginfo-0:2.54.0-1.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-debuginfo-0:2.54.0-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-debuginfo-0:2.54.0-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-devel-debuginfo-0:2.54.0-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-jsc-0:2.54.0-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-jsc-0:2.54.0-1.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • webkit2gtk3-jsc-0:2.54.0-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • +17 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Do not process or load untrusted web content with WebKitGTK. In Red Hat Enterprise Linux 7, the following packages require WebKitGTK4: evolution-data-server, glade, gnome-boxes, gnome-initial-setup, gnome-online-accounts, gnome-shell, shotwell, sushi and yelp. This vulnerability can only be exploited when these packages are installed in the system and being used via a graphical interface to process untrusted web content, via GNOME for example. In gnome-shell, the vulnerability can be exploited by an attacker from the local network without user interaction. To mitigate this vulnerability, consider removing these packages. Note that some of these packages are required by GNOME, removing them will also remove GNOME and other packages, breaking functionality. However, the server can still be used via the terminal interface. Additionally, WebKitGTK3 is not required by any package. Therefore, it can be removed without consequences or break of functionality. Workaround: Do not visit untrusted websites or load untrusted web content with WebKitGTK. In Red Hat Enterprise Linux 7, the following packages require WebKitGTK4: evolution-data-server, glade, gnome-boxes, gnome-initial-setup, gnome-online-accounts, gnome-shell, shotwell, sushi and yelp. This vulnerability can only be exploited when these packages are installed in the system and being used via a graphical interface to process untrusted web content, via GNOME for example. In gnome-shell, the vulnerability can be exploited by an attacker from the local network without user interaction. To mitigate this vulnerability, consider removing these packages. Note that some of these packages are required by GNOME, removing them will also remove GNOME and other packages, breaking functionality. However, the server can still be used via the terminal interface. Additionally, WebKitGTK3 is not required by any package. Therefore, it can be removed without consequences or break of functionality. Workaround: Avoid visiting untrusted websites or opening untrusted HTML content. Users should exercise caution when browsing the internet and only access reputable sources to reduce the risk of exploitation.

🔗 References (40)