RHSA-2025:23434HighCVSS 8.8

Red Hat Security Advisory: webkit2gtk3 security update

Published
December 17, 2025
Last Modified
August 26, 2026

🔗 CVE IDs covered (18)

CVE-2025-43432 →CVE-2025-43434 →CVE-2025-43438 →CVE-2025-13947 →CVE-2025-43430 →CVE-2025-43431 →CVE-2025-43433 →CVE-2025-43443 →CVE-2025-43392 →CVE-2025-43425 →CVE-2025-43427 →CVE-2025-43429 →CVE-2025-43440 →CVE-2025-43441 →CVE-2025-43458 →CVE-2025-13502 →CVE-2025-43421 →CVE-2025-66287 →

📋 Description

CVE-2025-13502 — webkit: WebKitGTK / WPE WebKit: Out-of-bounds read and integer underflow vulnerability leading to DoS CVE-2025-13947 — webkit: WebKitGTK: Remote user-assisted information disclosure via file drag-and-drop CVE-2025-43392 — webkitgtk: A website may exfiltrate image data cross-origin CVE-2025-43421 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43425 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43427 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43429 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43430 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43431 — webkitgtk: Processing maliciously crafted web content may lead to memory corruption CVE-2025-43432 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43433 — webkitgtk: Processing maliciously crafted web content may lead to memory corruption CVE-2025-43434 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2025-43438 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash CVE-2025-43440 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43441 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43443 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-43458 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash CVE-2025-66287 — webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash

🎯 Affected products40

  • Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-0:2.50.3-2.el8_4.src as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-0:2.50.3-2.el8_4.src as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-debuginfo-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-debuginfo-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-debuginfo-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-debuginfo-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-debugsource-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-debugsource-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-debugsource-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-debugsource-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-devel-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-devel-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-devel-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-devel-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-devel-debuginfo-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-devel-debuginfo-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-devel-debuginfo-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-devel-debuginfo-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-jsc-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-jsc-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-jsc-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-jsc-0:2.50.3-2.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • webkit2gtk3-jsc-debuginfo-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • webkit2gtk3-jsc-debuginfo-0:2.50.3-2.el8_4.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • +10 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: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: Do not visit untrusted websites. Also, 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 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 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: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

🔗 References (18)