RHSA-2026:11329 — Security Advisory

Red Hat Security Advisory: webkit2gtk3 security update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · April 28, 2026

Updated · July 15, 2026

Topic

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

Security Fix(es):

webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43213)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43214)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43457)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43511)
webkitgtk: Processing maliciously crafted web content may disclose internal states of the app (CVE-2025-46299)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20608)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20635)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20636)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20644)
webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)
webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)
webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20664)
webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced (CVE-2026-20665)
webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28857)
webkitgtk: A malicious website may be able to process restricted web content outside the sandbox (CVE-2026-28859)
webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack (CVE-2026-28871)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.