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Red Hat Product Security published a series of errata that patch security flaws in Thunderbird, the Linux kernel, OpenShift Container Platform, and JBoss Enterprise Application Platform on Red Hat Enterprise Linux. The advisories span numerous RHEL version streams and specialized support tracks, with the company classifying most notices as important and two gstreamer1-plugins-good releases as moderate. Each notice provides Common Vulnerability Scoring System ratings tied directly to specific CVE identifiers for detailed severity analysis. IT teams managing these environments should install the listed RHSA packages promptly to maintain system integrity.

RHSA-2026:53455: Important: thunderbird security update
RHSA-2026:53446: Important: thunderbird security update
RHSA-2026:53444: Important: thunderbird security update
RHSA-2026:53475: Important: thunderbird security update
RHSA-2026:53452: Moderate: gstreamer1-plugins-good security update
RHSA-2026:53435: Important: udisks2 security update
RHSA-2026:53445: Important: thunderbird security update
RHSA-2026:53412: Important: opentelemetry-collector security update
RHSA-2026:53413: Important: opentelemetry-collector security update
RHSA-2026:53365: Important: fence-agents security update
RHSA-2026:51036: Important: OpenShift Container Platform 4.22.9 packages and security update
RHSA-2026:53330: Important: kernel security, bug fix, and enhancement update
RHSA-2026:53806: Important: Red Hat JBoss Enterprise Application Platform 7.4.25 security update
RHSA-2026:53644: Important: Red Hat JBoss Enterprise Application Platform 7.4.25 security pdate
RHSA-2026:53454: Important: thunderbird security update
RHSA-2026:53453: Important: thunderbird security update
RHSA-2026:53451: Moderate: gstreamer1-plugins-good security update
RHSA-2026:53329: Important: kernel security, bug fix, and enhancement update
RHSA-2026:53363: Important: fence-agents security update
RHSA-2026:53374: Important: rhc security update
RHSA-2026:53364: Important: resource-agents security update
RHSA-2026:53298: Important: nodejs22 security update
RHSA-2026:53416: Important: host-metering security update
RHSA-2026:53402: Important: ldns security update
RHSA-2026:53990: Important: kernel security, bug fix, and enhancement update
RHSA-2026:53989: Important: kernel security update
RHSA-2026:51422: Important: Red Hat build of MicroShift 4.19.42 security update
RHSA-2026:53844: Important: iscsi-initiator-utils security, bug fix, and enhancement update
RHSA-2026:53845: Important: iscsi-initiator-utils security, bug fix, and enhancement update
RHSA-2026:53848: Important: isns-utils security update
RHSA-2026:53847: Important: isns-utils security update
RHSA-2026:53450: Important: xorg-x11-server-Xwayland security update
RHSA-2026:53415: Important: opentelemetry-collector security update
RHSA-2026:53846: Important: isns-utils security update




RHSA-2026:53455: Important: thunderbird security update


An update for thunderbird is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53455: Important: thunderbird security update



RHSA-2026:53446: Important: thunderbird security update


An update for thunderbird is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53446: Important: thunderbird security update



RHSA-2026:53444: Important: thunderbird security update


An update for thunderbird is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53444: Important: thunderbird security update



RHSA-2026:53475: Important: thunderbird security update


An update for thunderbird is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53475: Important: thunderbird security update



RHSA-2026:53452: Moderate: gstreamer1-plugins-good security update


An update for gstreamer1-plugins-good is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53452: Moderate: gstreamer1-plugins-good security update



RHSA-2026:53435: Important: udisks2 security update


An update for udisks2 is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53435: Important: udisks2 security update



RHSA-2026:53445: Important: thunderbird security update


An update for thunderbird is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53445: Important: thunderbird security update



RHSA-2026:53412: Important: opentelemetry-collector security update


An update for opentelemetry-collector is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53412: Important: opentelemetry-collector security update



RHSA-2026:53413: Important: opentelemetry-collector security update


An update for opentelemetry-collector is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53413: Important: opentelemetry-collector security update



RHSA-2026:53365: Important: fence-agents security update


An update for fence-agents is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53365: Important: fence-agents security update



RHSA-2026:51036: Important: OpenShift Container Platform 4.22.9 packages and security update


Red Hat OpenShift Container Platform release 4.22.9 is now available with
updates to packages and images that fix several bugs and add enhancements.

This release includes a security update for Red Hat OpenShift Container
Platform 4.22.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.


RHSA-2026:51036: Important: OpenShift Container Platform 4.22.9 packages and security update



RHSA-2026:53330: Important: kernel security, bug fix, and enhancement update


An update for kernel is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53330: Important: kernel security, bug fix, and enhancement update



RHSA-2026:53806: Important: Red Hat JBoss Enterprise Application Platform 7.4.25 security update


A security update is now available for Red Hat JBoss Enterprise Application
Platform 7.4. Red Hat Product Security has rated this update as having a
security impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.


RHSA-2026:53806: Important: Red Hat JBoss Enterprise Application Platform 7.4.25 security update



RHSA-2026:53644: Important: Red Hat JBoss Enterprise Application Platform 7.4.25 security pdate


A security update is now available for Red Hat JBoss Enterprise Application
Platform 7.4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated
this update as having a security impact of Important. A Common Vulnerability
Scoring System (CVSS) base score, which gives a detailed severity rating, is
available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53644: Important: Red Hat JBoss Enterprise Application Platform 7.4.25 security pdate



RHSA-2026:53454: Important: thunderbird security update


An update for thunderbird is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53454: Important: thunderbird security update



RHSA-2026:53453: Important: thunderbird security update


An update for thunderbird is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53453: Important: thunderbird security update



RHSA-2026:53451: Moderate: gstreamer1-plugins-good security update


An update for gstreamer1-plugins-good is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53451: Moderate: gstreamer1-plugins-good security update



RHSA-2026:53329: Important: kernel security, bug fix, and enhancement update


An update for kernel is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53329: Important: kernel security, bug fix, and enhancement update



RHSA-2026:53363: Important: fence-agents security update


An update for fence-agents is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53363: Important: fence-agents security update



RHSA-2026:53374: Important: rhc security update


An update for rhc is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53374: Important: rhc security update



RHSA-2026:53364: Important: resource-agents security update


An update for resource-agents is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53364: Important: resource-agents security update



RHSA-2026:53298: Important: nodejs22 security update


An update for nodejs22 is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53298: Important: nodejs22 security update



RHSA-2026:53416: Important: host-metering security update


An update for host-metering is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53416: Important: host-metering security update



RHSA-2026:53402: Important: ldns security update


An update for ldns is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53402: Important: ldns security update



RHSA-2026:53990: Important: kernel security, bug fix, and enhancement update


An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53990: Important: kernel security, bug fix, and enhancement update



RHSA-2026:53989: Important: kernel security update


An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53989: Important: kernel security update



RHSA-2026:51422: Important: Red Hat build of MicroShift 4.19.42 security update


Red Hat build of MicroShift release 4.19.42 is now available with updates
to packages and images that include a security update.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.


RHSA-2026:51422: Important: Red Hat build of MicroShift 4.19.42 security update



RHSA-2026:53844: Important: iscsi-initiator-utils security, bug fix, and enhancement update


An update for iscsi-initiator-utils is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53844: Important: iscsi-initiator-utils security, bug fix, and enhancement update



RHSA-2026:53845: Important: iscsi-initiator-utils security, bug fix, and enhancement update


An update for iscsi-initiator-utils is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53845: Important: iscsi-initiator-utils security, bug fix, and enhancement update



RHSA-2026:53848: Important: isns-utils security update


An update for isns-utils is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53848: Important: isns-utils security update



RHSA-2026:53847: Important: isns-utils security update


An update for isns-utils is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53847: Important: isns-utils security update



RHSA-2026:53450: Important: xorg-x11-server-Xwayland security update


An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53450: Important: xorg-x11-server-Xwayland security update



RHSA-2026:53415: Important: opentelemetry-collector security update


An update for opentelemetry-collector is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53415: Important: opentelemetry-collector security update



RHSA-2026:53846: Important: isns-utils security update


An update for isns-utils is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.


RHSA-2026:53846: Important: isns-utils security update