Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-08-17T21:29:37 webkitgtk: Visiting a maliciously crafted website may leak sensitive data 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CWE-200

The issue was addressed with improved checks. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Visiting a maliciously crafted website may leak sensitive data.

A flaw was found in WebKitGTK. Visiting a malicious website may lead to a sensitive data leak due to improper validation checks.

To exploit this flaw, an attacker needs to trick a user into visiting a malicious website. For this reason, this flaw has been rated with a moderate severity. 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. Red Hat Enterprise Linux 6 Out of support scope webkitgtk Red Hat Enterprise Linux 7 Affected webkitgtk3 Red Hat Enterprise Linux 7 Affected webkitgtk4 Red Hat Enterprise Linux 8 Affected webkit2gtk3 Red Hat Enterprise Linux 9 Affected webkit2gtk3 https://www.cve.org/CVERecord?id=CVE-2026-64778 https://nvd.nist.gov/vuln/detail/CVE-2026-64778 https://support.apple.com/en-us/148281 https://support.apple.com/en-us/148282 https://support.apple.com/en-us/148286 https://support.apple.com/en-us/148287