RHEL 9 : webkit2gtk3 (RHSA-2026:99132)

critical Nessus Plugin ID 379412

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-2026:99132 advisory.

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

Security Fix(es):

* chromium-browser: skia: Out of bounds read in Skia (CVE-2026-121084)

* chromium-browser: angle: Use after free in ANGLE (CVE-2026-121148)

* chromium-browser: angle: Out of bounds read in ANGLE (CVE-2026-121197)

* chromium-browser: angle: Buffer overflow in ANGLE (CVE-2026-121249)

* chromium-browser: skia: Buffer overflow in Skia (CVE-2026-121086)

* chromium-browser: skia: Out of bounds read in Skia (CVE-2026-121160)

* chromium-browser: skia: Uninitialized resource in Skia (CVE-2026-121072)

* chromium-browser: skia: Uninitialized resource in Skia (CVE-2026-121227)

* chromium-browser: skia: Out of bounds read in Skia (CVE-2026-121032)

* chromium-browser: angle: Race condition in ANGLE (CVE-2026-121230)

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-2026:99132.

Plugin Details

Severity: Critical

ID: 379412

File Name: redhat-RHSA-2026-99132.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/12/2026

Updated: 11/12/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 92.82

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-2026-121249

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Temporal Score: 8.3

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, 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: 11/11/2026

Vulnerability Publication Date: 11/3/2026

Reference Information

CVE: CVE-2026-121032, CVE-2026-121072, CVE-2026-121084, CVE-2026-121086, CVE-2026-121148, CVE-2026-121160, CVE-2026-121197, CVE-2026-121227, CVE-2026-121230, CVE-2026-121249

CWE: 121, 122, 125, 362, 416, 908

RHSA: 2026:99132

Detections

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