RHSA-2026:58550HighCVSS 8.8

Red Hat Security Advisory: webkit2gtk3 security update

Published
August 24, 2026
Last Modified
August 24, 2026

🔗 CVE IDs covered (24)

CVE-2026-43699 →CVE-2026-43712 →CVE-2026-43716 →CVE-2026-43721 →CVE-2026-43732 →CVE-2026-43745 →CVE-2026-39872 →CVE-2026-43676 →CVE-2026-43713 →CVE-2026-43725 →CVE-2026-43726 →CVE-2026-43740 →CVE-2024-4367 →CVE-2026-43663 →CVE-2026-43701 →CVE-2026-43715 →CVE-2026-43734 →CVE-2026-43742 →CVE-2026-43705 →CVE-2026-43707 →CVE-2026-43720 →CVE-2026-43727 →CVE-2026-43731 →CVE-2026-64787 →

📋 Description

CVE-2024-4367 — Mozilla: Arbitrary JavaScript execution in PDF.js CVE-2026-39872 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43663 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43676 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43699 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43701 — webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox CVE-2026-43705 — webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption CVE-2026-43707 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43712 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43713 — webkitgtk: webkitgtk: Visiting a website may leak sensitive data CVE-2026-43715 — webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption CVE-2026-43716 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43720 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43721 — webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data CVE-2026-43725 — webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox CVE-2026-43726 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43727 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43731 — webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption CVE-2026-43732 — webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information CVE-2026-43734 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43740 — webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory CVE-2026-43742 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-43745 — webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash CVE-2026-64787 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination

🎯 Affected products47

  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-0:2.52.5-1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-0:2.52.5-1.el9_2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-0:2.52.5-1.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-0:2.52.5-1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-0:2.52.5-1.el9_2.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-0:2.52.5-1.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debuginfo-0:2.52.5-1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debuginfo-0:2.52.5-1.el9_2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debuginfo-0:2.52.5-1.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debuginfo-0:2.52.5-1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debuginfo-0:2.52.5-1.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debugsource-0:2.52.5-1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debugsource-0:2.52.5-1.el9_2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debugsource-0:2.52.5-1.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debugsource-0:2.52.5-1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-debugsource-0:2.52.5-1.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-0:2.52.5-1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-0:2.52.5-1.el9_2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-0:2.52.5-1.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-0:2.52.5-1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-0:2.52.5-1.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-debuginfo-0:2.52.5-1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-debuginfo-0:2.52.5-1.el9_2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-debuginfo-0:2.52.5-1.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-debuginfo-0:2.52.5-1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-devel-debuginfo-0:2.52.5-1.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-jsc-0:2.52.5-1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-jsc-0:2.52.5-1.el9_2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • webkit2gtk3-jsc-0:2.52.5-1.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • +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.

🔗 References (27)