RHEL 9 : webkit2gtk3 (RHSA-2026:69098)

high Nessus Plugin ID 348598

Language:

Synopsis

The remote Red Hat host is missing one or more security updates for webkit2gtk3.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:69098 advisory.

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

Security Fix(es):

* chromium-browser: Skia in Google Chrome: Sandbox escape via crafted HTML page (CVE-2026-19154)

* chromium-browser: skia: Skia: Sandbox escape via out-of-bounds write in Chromium (CVE-2026-19173)

* chromium-browser: Skia in Google Chrome: Cross-origin data leakage via uninitialized use (CVE-2026-19161)

* chromium-browser: Skia: Arbitrary code execution via crafted HTML page (CVE-2026-19176)

* chromium-browser: Chromium: Information leak allows web origin policy bypass (CVE-2026-76041)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-28984)

* webkitgtk: Visiting a website may lead to an app denial-of-service (CVE-2026-43804)

* webkitgtk: Websites may know if the user has visited a given link (CVE-2026-64713)

* webkitgtk: Maliciously crafted web content may violate iframe sandboxing policy (CVE-2026-64728)

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

* webkitgtk: Visiting a website that frames malicious content may lead to UI spoofing (CVE-2026-64730)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-64757)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-64783)

* webkitgtk: use-after-free of JSCValue function parameters (CVE-2026-78376)

* chromium-browser: Skia: Information disclosure via out-of-bounds read in crafted media file (CVE-2026-79020)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-43795)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-64715)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-64718)

* webkitgtk: Visiting a maliciously crafted website may leak sensitive data (CVE-2026-64778)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-64779)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-64780)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-64782)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-64784)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65331)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65332)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65334)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65335)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65336)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65337)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65338)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65340)

* webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2026-65341)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2026-65351)

* webkitgtk: Validate the full FeatureList array once in OpenTypeVerticalData findFeature (CVE-2026-83596)

* chromium-browser: skia: chromium-browser: Information leak in Skia (CVE-2026-84359)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination (CVE-2026-84635)

* webkitgtk: Processing maliciously crafted web content may disclose sensitive user information (CVE-2026-64753)

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 webkit2gtk3 package based on the guidance in RHSA-2026:69098.

Plugin Details

Severity: High

ID: 348598

File Name: redhat-RHSA-2026-69098.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/21/2026

Updated: 9/21/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.47

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-2026-84635

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-2026-83596

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3

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: 9/21/2026

Vulnerability Publication Date: 7/27/2026

Reference Information

CVE: CVE-2026-19154, CVE-2026-19161, CVE-2026-19173, CVE-2026-19176, CVE-2026-28984, CVE-2026-43795, CVE-2026-43804, CVE-2026-64713, CVE-2026-64715, CVE-2026-64718, CVE-2026-64728, CVE-2026-64730, CVE-2026-64753, CVE-2026-64757, CVE-2026-64778, CVE-2026-64779, CVE-2026-64780, CVE-2026-64782, CVE-2026-64783, CVE-2026-64784, CVE-2026-64787, CVE-2026-65331, CVE-2026-65332, CVE-2026-65334, CVE-2026-65335, CVE-2026-65336, CVE-2026-65337, CVE-2026-65338, CVE-2026-65340, CVE-2026-65341, CVE-2026-65351, CVE-2026-76041, CVE-2026-78376, CVE-2026-79020, CVE-2026-83596, CVE-2026-84359, CVE-2026-84635

CWE: 120, 125, 20, 200, 346, 359, 416, 451, 664, 667, 693, 787, 824, 825

RHSA: 2026:69098

Detections

Analytics