RHSA-2026:27728HighCVSS 8.8

Red Hat Security Advisory: webkitgtk4 security update

Published
June 22, 2026
Last Modified
August 17, 2026

🔗 CVE IDs covered (16)

CVE-2026-28907 →CVE-2026-28946 →CVE-2026-28883 →CVE-2026-28905 →CVE-2026-28953 →CVE-2026-28955 →CVE-2026-28958 →CVE-2026-28904 →CVE-2026-43658 →CVE-2026-43660 →CVE-2026-28903 →CVE-2026-28942 →CVE-2026-28947 →CVE-2026-28847 →CVE-2026-28901 →CVE-2026-28902 →

📋 Description

CVE-2026-28847 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28883 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28901 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28902 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28903 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28904 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28905 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28907 — webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced CVE-2026-28942 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28946 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28947 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-28953 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28955 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2026-28958 — webkitgtk: An app may be able to access sensitive user data CVE-2026-43658 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2026-43660 — webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced

🎯 Affected products20

  • Red Hat Enterprise Linux Server (v. 7 ELS)
  • Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • webkitgtk4-0:2.52.4-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-0:2.52.4-1.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-0:2.52.4-1.el7_9.src as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-0:2.52.4-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-debuginfo-0:2.52.4-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-debuginfo-0:2.52.4-1.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-debuginfo-0:2.52.4-1.el7_9.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • webkitgtk4-debuginfo-0:2.52.4-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-devel-0:2.52.4-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-devel-0:2.52.4-1.el7_9.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • webkitgtk4-devel-0:2.52.4-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-doc-0:2.52.4-1.el7_9.noarch as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • webkitgtk4-jsc-0:2.52.4-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-jsc-0:2.52.4-1.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-jsc-0:2.52.4-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-jsc-devel-0:2.52.4-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • webkitgtk4-jsc-devel-0:2.52.4-1.el7_9.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • webkitgtk4-jsc-devel-0:2.52.4-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)

✅ 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 (19)