RHSA-2026:2078 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.18.33 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 4.18.

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.

Description

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.

This advisory contains the container images for Red Hat OpenShift Container Platform 4.18.33. See the following advisory for the RPM packages for this release:

https://access.redhat.com/errata/RHSA-2026:2071

Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes:

https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/

Security Fix(es):

• qs: qs: Denial of Service via improper input validation in array parsing (CVE-2025-15284)
• github.com/sirupsen/logrus: github.com/sirupsen/logrus: Denial-of-Service due to large single-line payload (CVE-2025-65637)
• lodash: prototype pollution in _.unset and _.omit functions (CVE-2025-13465)

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.

All OpenShift Container Platform 4.18 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html-single/updating_clusters/index#updating-cluster-cli.

Solution

For OpenShift Container Platform 4.18 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:

https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/

You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.

The sha values for the release are as follows:

(For x86_64 architecture)
The image digest is sha256:40bb7cf7c637bf9efd8fb0157839d325a019d67cc7d7279665fcf90dbb7f3f33

(For s390x architecture)
The image digest is sha256:7e67adee8cc5702b37f38757040107f7a47f37e3fc393f0907f0cddd23ba3891

(For ppc64le architecture)
The image digest is sha256:812958be0ef6e3225890a52288d85734b064d9680db8f54efc8e22ad8c5afbed

(For aarch64 architecture)
The image digest is sha256:17eb95547f20de60bce6bb820ab8ce1ae83d0d2cd1fb3c2331ff8a2a7b4b36bb

All OpenShift Container Platform 4.18 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html-single/updating_clusters/index#updating-cluster-cli.

Fixes

• BZ - 2418900
• BZ - 2425946
• BZ - 2431740
• OCPBUGS-31679 - Every new VLAN on OVN localnet requires host reconfiguration
• OCPBUGS-54724 - CEL validation ContainsCIDR dosent cover non-masked CIDRs
• OCPBUGS-64816 - Sync release-4.18 branch for cluster-api-provider-openstack with upstream
• OCPBUGS-65808 - 4.18 donut chart text and form elements are incorrectly setting color when in dark theme
• OCPBUGS-66249 - OCP 4.19.19: GPU workloads with readOnlyRootFilesystem=true fail to run, show NVIDIA hook errors
• OCPBUGS-69880 - [Azure UPI] dropping support for field used in image gallery versions
• OCPBUGS-69955 - ValidatingAdmissionPolicy not working for openshift-apiserver resources
• OCPBUGS-71227 - MCP is not correctly degraded when a pivotError happens
• OCPBUGS-73753 - When configuring CA certificates to HelmChartRepository or ProjectHelmChartRepository, the charts installation breaks down
• OCPBUGS-73877 - 10m catalog sync interval contributes to unbounded etcd growth
• OCPBUGS-74207 - [release-4.18]Unrevert TLS 1.3 / Modern profile tests #29611 with fixes
• OCPBUGS-74243 - [4.18] duplicate process logs
• OCPBUGS-74377 - PTP OC 2 Port CI: After a configuration change & load the PTP Daemon stops reporting metrics
• OCPBUGS-74386 - [4.18] blank line after daemon process logs
• OCPBUGS-74552 - update to Multi-arch compatible image

CVEs

• CVE-2025-13465
• CVE-2025-15284
• CVE-2025-65637

References

• https://access.redhat.com/security/updates/classification/