Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-06-02T00:00:00 webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CWE-20

The issue was addressed with improved input validation. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may prevent Content Security Policy from being enforced.

A flaw was found in WebKitGTK. Processing malicious web content may prevent Content Security Policy from being enforced due to improper input validation.

To exploit this flaw, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with a moderate severity. 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. Red Hat Enterprise Linux 7 Extended Lifecycle Support 2026-06-22T00:00:00Z RHSA-2026:27728 webkitgtk4-0:2.52.4-1.el7_9 Red Hat Enterprise Linux 8 2026-06-15T00:00:00Z RHSA-2026:25918 webkit2gtk3-0:2.52.4-1.el8_10 Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 2026-06-22T00:00:00Z RHSA-2026:27785 webkit2gtk3-0:2.52.4-1.el8_4 Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 2026-06-22T00:00:00Z RHSA-2026:27785 webkit2gtk3-0:2.52.4-1.el8_4 Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 2026-06-23T00:00:00Z RHSA-2026:28114 webkit2gtk3-0:2.52.4-1.el8_6 Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 2026-06-23T00:00:00Z RHSA-2026:28114 webkit2gtk3-0:2.52.4-1.el8_6 Red Hat Enterprise Linux 8.8 Telecommunications Update Service 2026-06-22T00:00:00Z RHSA-2026:27804 webkit2gtk3-0:2.52.4-1.el8_8 Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 2026-06-22T00:00:00Z RHSA-2026:27804 webkit2gtk3-0:2.52.4-1.el8_8 Red Hat Enterprise Linux 9 2026-06-15T00:00:00Z RHSA-2026:25927 webkit2gtk3-0:2.52.4-1.el9_8 Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 2026-06-23T00:00:00Z RHSA-2026:28148 webkit2gtk3-0:2.52.4-1.el9_2 Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 2026-06-23T00:00:00Z RHSA-2026:28146 webkit2gtk3-0:2.52.4-1.el9_4 Red Hat Enterprise Linux 9.6 Extended Update Support 2026-06-25T00:00:00Z RHSA-2026:28147 webkit2gtk3-0:2.52.4-1.el9_6 Red Hat Enterprise Linux 6 Out of support scope webkitgtk Red Hat Enterprise Linux 7 Not affected webkitgtk3 https://www.cve.org/CVERecord?id=CVE-2026-28907 https://nvd.nist.gov/vuln/detail/CVE-2026-28907 https://webkitgtk.org/security/WSA-2026-0003.html