RHEL 7 : webkitgtk4 (RHSA-2026:27728)

high Nessus Plugin ID 321894

Synopsis

The remote Red Hat host is missing one or more security updates for webkitgtk4.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27728 advisory.

WebKitGTK+ is port of the WebKit portable web rendering engine to the GTK+ platform. These packages provide WebKitGTK+ for GTK+ 3.

Security Fix(es):

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-28946)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28847)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28883)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28901)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28902)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28903)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28904)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28905)

* webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced (CVE-2026-28907)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-28942)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-28947)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28953)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28955)

* webkitgtk: An app may be able to access sensitive user data (CVE-2026-28958)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-43658)

* webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced (CVE-2026-43660)

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL webkitgtk4 package based on the guidance in RHSA-2026:27728.

Plugin Details

Severity: High

ID: 321894

File Name: redhat-RHSA-2026-27728.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 6/22/2026

Updated: 6/22/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-43658

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-28947

Vulnerability Information

CPE: cpe:/o:redhat:rhel_els:7, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-devel, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc-devel, p-cpe:/a:redhat:enterprise_linux:webkitgtk4, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-doc

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 6/22/2026

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-28847, CVE-2026-28883, CVE-2026-28901, CVE-2026-28902, CVE-2026-28903, CVE-2026-28904, CVE-2026-28905, CVE-2026-28907, CVE-2026-28942, CVE-2026-28946, CVE-2026-28947, CVE-2026-28953, CVE-2026-28955, CVE-2026-28958, CVE-2026-43658, CVE-2026-43660

CWE: 120, 20, 200, 416, 693

RHSA: 2026:27728

Detections

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