RHSA-2026:59326: Important: webkit2gtk3 security update

Published Aug 25, 2026
·
Updated

Important: webkit2gtk3 security update

Other sources

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) webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination (CVE-2026-64787) 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.

Red Hat

Affected Software

31 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server - TUS
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life
redhat/webkit2gtk3<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-debugsource<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-debugsource<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-devel<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-devel<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-devel-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-devel-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-devel<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-devel<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-devel-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-devel-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-debugsource<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-devel<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-devel-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-devel<2.52.5-1.el8_8
2.52.5-1.el8_8
redhat/webkit2gtk3-jsc-devel-debuginfo<2.52.5-1.el8_8
2.52.5-1.el8_8

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/webkit2gtk3 to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  2. Upgrade

    Upgrade redhat/webkit2gtk3-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  3. Upgrade

    Upgrade redhat/webkit2gtk3-debugsource to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  4. Upgrade

    Upgrade redhat/webkit2gtk3-devel to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  5. Upgrade

    Upgrade redhat/webkit2gtk3-devel-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  6. Upgrade

    Upgrade redhat/webkit2gtk3-jsc to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  7. Upgrade

    Upgrade redhat/webkit2gtk3-jsc-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  8. Upgrade

    Upgrade redhat/webkit2gtk3-jsc-devel to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8
  9. Upgrade

    Upgrade redhat/webkit2gtk3-jsc-devel-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.52.5-1.el8_8

Event History

Aug 25, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·06:59 AM
Data Sourced
via Red Hat·06:59 AM
Severity

Frequently Asked Questions

1

Which environments are covered by this advisory?

The advisory applies to the listed Red Hat Enterprise Linux Server for Power LE and x86_64 offerings, including Update Services for SAP Solutions, TUS, and x86_64 Extended Life Cycle Long Life subscriptions.

2

How severe is this update?

This is rated Important by Red Hat and has a reported severity of high (7), with a risk value of 33.

3

When was the advisory issued?

RHSA-2026:59326 was published and last modified on 2026-08-25.

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