Red Hat alert RHSA-2026:42088-01 (webkit2gtk3) [LWN.net]

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 8. 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. WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fix(es): * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-39872) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43663) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43676) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43699) * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox (CVE-2026-43701) * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43707) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43712) * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713) * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43716) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43720) * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721) * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox (CVE-2026-43725) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43726) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43727) * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731) * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information (CVE-2026-43732) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43734) * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43742) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43745) 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. This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

Original: https://access.redhat.com/security/data/csaf/v2/advisories/2026/rhsa-2026_42088.json