Detections
Analytics

RHEL 8 : qt5-qtbase (RHSA-2026:98103)

high Nessus Plugin ID 378718

Synopsis

The remote Red Hat host is missing a security update for qt5-qtbase.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:98103 advisory.

 Qt is a software toolkit for developing applications. The qt5-base packages contain base tools for string, xml, and network handling in Qt.

 Security Fix(es):

 * qt: qt: Denial of Service via crafted XML parsing in QXmlStreamReader (CVE-2026-16762)

 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 this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL qt5-qtbase package based on the guidance in RHSA-2026:98103.

See Also

https://access.redhat.com/errata/RHSA-2026:98103

https://access.redhat.com/security/updates/classification/#important

http://www.nessus.org/u?8f992abb

Plugin Details

Severity: High

ID: 378718

File Name: redhat-RHSA-2026-98103.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.52

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-16762

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_eus:8.10, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-common, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-devel, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-examples, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-gui, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-mysql, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-odbc, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-postgresql, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-private-devel, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase-static, p-cpe:/a:redhat:enterprise_linux:qt5-qtbase

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: 10/23/2026

Reference Information

CVE: CVE-2026-16762

CWE: 776

RHSA: 2026:98103