- Issued:
- 2026-03-11
- Updated:
- 2026-03-11
RHSA-2026:3875 - Important: OpenShift Container Platform 4.18.35 packages and security update
Synopsis
Important: OpenShift Container Platform 4.18.35 packages and security update
Type/Severity
Security Advisory Important
Topic
Red Hat OpenShift Container Platform release 4.18.35 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. sha256:0a43bf979ac93078a64c99f078b6097634920909f9acbaa18d494b7203b33a52 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 RPM packages for Red Hat OpenShift Container Platform 4.18.35. See the following advisory for the container images for this release:
https://access.redhat.com/errata/RHSA-2026:3905
Security Fix(es):
- golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)
- golang: archive/tar: Unbounded allocation when parsing GNU sparse map (CVE-2025-58183)
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: u https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat OpenShift Container Platform | 4.18 | x86_64 |
| Red Hat OpenShift Container Platform | 4.18 | x86_64 |
| Red Hat OpenShift Container Platform for Power | 4.18 | ppc64le |
| Red Hat OpenShift Container Platform for Power | 4.18 | ppc64le |
| Red Hat OpenShift Container Platform for IBM Z and LinuxONE | 4.18 | s390x |
| Red Hat OpenShift Container Platform for IBM Z and LinuxONE | 4.18 | s390x |
| Red Hat OpenShift Container Platform for ARM 64 | 4.18 | aarch64 |
| Red Hat OpenShift Container Platform for ARM 64 | 4.18 | aarch64 |
Updated Packages
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.aarch64.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el8.x86_64.rpm
- toolbox-debugsource-0.0.99.5-5.rhaos4.18.el8.x86_64.rpm
- containernetworking-plugins-1.4.0-7.rhaos4.18.el8.x86_64.rpm
- containernetworking-plugins-debugsource-1.4.0-7.rhaos4.18.el8.x86_64.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el8.x86_64.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.ppc64le.rpm
- conmon-debuginfo-2.1.12-10.rhaos4.18.el8.aarch64.rpm
- runc-1.2.9-4.rhaos4.18.el8.aarch64.rpm
- conmon-debugsource-2.1.12-10.rhaos4.18.el8.x86_64.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el8.src.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.aarch64.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.aarch64.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.ppc64le.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el9.s390x.rpm
- skopeo-1.16.1-3.rhaos4.18.el8.ppc64le.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.x86_64.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el9.x86_64.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el8.src.rpm
- containernetworking-plugins-debuginfo-1.4.0-7.rhaos4.18.el8.s390x.rpm
- runc-debugsource-1.2.9-4.rhaos4.18.el8.x86_64.rpm
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.x86_64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.aarch64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.ppc64le.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.x86_64.rpm
- runc-debugsource-1.2.9-4.rhaos4.18.el8.s390x.rpm
- toolbox-debuginfo-0.0.99.5-5.rhaos4.18.el8.aarch64.rpm
- containernetworking-plugins-debugsource-1.4.0-7.rhaos4.18.el8.aarch64.rpm
- toolbox-debuginfo-0.0.99.5-5.rhaos4.18.el8.x86_64.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el9.ppc64le.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el9.ppc64le.rpm
- conmon-2.1.12-10.rhaos4.18.el8.src.rpm
- openshift-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.src.rpm
- runc-debuginfo-1.2.9-4.rhaos4.18.el8.s390x.rpm
- containernetworking-plugins-1.4.0-7.rhaos4.18.el8.src.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el9.x86_64.rpm
- openshift-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.src.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el8.ppc64le.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el8.s390x.rpm
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.s390x.rpm
- conmon-2.1.12-10.rhaos4.18.el8.aarch64.rpm
- containernetworking-plugins-debuginfo-1.4.0-7.rhaos4.18.el8.ppc64le.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el9.x86_64.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.s390x.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el9.s390x.rpm
- runc-debuginfo-1.2.9-4.rhaos4.18.el8.ppc64le.rpm
- skopeo-1.16.1-3.rhaos4.18.el8.s390x.rpm
- conmon-2.1.12-10.rhaos4.18.el8.ppc64le.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.ppc64le.rpm
- runc-debuginfo-1.2.9-4.rhaos4.18.el8.x86_64.rpm
- containernetworking-plugins-debugsource-1.4.0-7.rhaos4.18.el8.ppc64le.rpm
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.ppc64le.rpm
- toolbox-0.0.99.5-5.rhaos4.18.el8.x86_64.rpm
- runc-debugsource-1.2.9-4.rhaos4.18.el8.aarch64.rpm
- runc-1.2.9-4.rhaos4.18.el8.src.rpm
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.x86_64.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el9.src.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el8.s390x.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el8.src.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el8.ppc64le.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el9.aarch64.rpm
- conmon-debuginfo-2.1.12-10.rhaos4.18.el8.ppc64le.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el8.ppc64le.rpm
- toolbox-0.0.99.5-5.rhaos4.18.el8.aarch64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.x86_64.rpm
- containernetworking-plugins-1.4.0-7.rhaos4.18.el8.s390x.rpm
- containernetworking-plugins-debuginfo-1.4.0-7.rhaos4.18.el8.x86_64.rpm
- containernetworking-plugins-1.4.0-7.rhaos4.18.el8.aarch64.rpm
- skopeo-1.16.1-3.rhaos4.18.el8.x86_64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.aarch64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.s390x.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.aarch64.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el8.x86_64.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el9.src.rpm
- runc-1.2.9-4.rhaos4.18.el8.ppc64le.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el9.aarch64.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.aarch64.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el8.src.rpm
- openshift-clients-redistributable-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el9.x86_64.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el9.s390x.rpm
- conmon-debuginfo-2.1.12-10.rhaos4.18.el8.s390x.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.s390x.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.s390x.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.x86_64.rpm
- conmon-debugsource-2.1.12-10.rhaos4.18.el8.aarch64.rpm
- skopeo-tests-1.16.1-3.rhaos4.18.el8.aarch64.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.ppc64le.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el8.aarch64.rpm
- runc-debugsource-1.2.9-4.rhaos4.18.el8.ppc64le.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.s390x.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el9.src.rpm
- conmon-debugsource-2.1.12-10.rhaos4.18.el8.ppc64le.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.x86_64.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.s390x.rpm
- openshift-kube-scheduler-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.ppc64le.rpm
- conmon-2.1.12-10.rhaos4.18.el8.x86_64.rpm
- runc-1.2.9-4.rhaos4.18.el8.s390x.rpm
- openshift-clients-redistributable-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el8.x86_64.rpm
- skopeo-1.16.1-3.rhaos4.18.el8.aarch64.rpm
- skopeo-tests-1.16.1-3.rhaos4.18.el8.ppc64le.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el8.s390x.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.s390x.rpm
- toolbox-debugsource-0.0.99.5-5.rhaos4.18.el8.aarch64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.s390x.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.x86_64.rpm
- skopeo-tests-1.16.1-3.rhaos4.18.el8.x86_64.rpm
- openshift-kubelet-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.aarch64.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el8.aarch64.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el8.s390x.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el9.ppc64le.rpm
- skopeo-1.16.1-3.rhaos4.18.el8.src.rpm
- runc-1.2.9-4.rhaos4.18.el8.x86_64.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el9.s390x.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el9.x86_64.rpm
- conmon-2.1.12-10.rhaos4.18.el8.s390x.rpm
- containernetworking-plugins-1.4.0-7.rhaos4.18.el8.ppc64le.rpm
- containernetworking-plugins-debuginfo-1.4.0-7.rhaos4.18.el8.aarch64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.x86_64.rpm
- openshift-kube-controller-manager-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.ppc64le.rpm
- containernetworking-plugins-debugsource-1.4.0-7.rhaos4.18.el8.s390x.rpm
- skopeo-tests-1.16.1-3.rhaos4.18.el8.s390x.rpm
- toolbox-0.0.99.5-5.rhaos4.18.el8.src.rpm
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.ppc64le.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el9.x86_64.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el9.ppc64le.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el8.x86_64.rpm
- ose-gcp-gcr-image-credential-provider-4.18.0-202602242055.p2.g6ea2356.assembly.stream.el9.src.rpm
- ose-azure-acr-image-credential-provider-4.18.0-202602242055.p2.g9c24d76.assembly.stream.el8.ppc64le.rpm
- runc-debuginfo-1.2.9-4.rhaos4.18.el8.aarch64.rpm
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.s390x.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.aarch64.rpm
- conmon-debuginfo-2.1.12-10.rhaos4.18.el8.x86_64.rpm
- ose-aws-ecr-image-credential-provider-4.18.0-202602242055.p2.gc395190.assembly.stream.el9.aarch64.rpm
- conmon-debugsource-2.1.12-10.rhaos4.18.el8.s390x.rpm
- openshift-hyperkube-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.ppc64le.rpm
- openshift-kube-apiserver-4.18.0-202602242055.p2.g91c2408.assembly.stream.el8.aarch64.rpm
- openshift-clients-4.18.0-202602242055.p2.g3a48fc2.assembly.stream.el8.aarch64.rpm
Fixes
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.