Red Hat Security Advisory: OpenShift Container Platform 4.20.16 packages and security update
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 4.20.16. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:3855 Security Fix(es): * golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) 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 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.
AI Analysis
Technical Summary
The security advisory for Red Hat OpenShift Container Platform 4.20.16 addresses a vulnerability identified as CVE-2025-61728 in the golang archive/zip package. The issue causes excessive CPU consumption during the building of the archive index, which could impact system performance. The advisory provides updated RPM packages and container images to remediate this issue. The fix is included in the 4.20.16 release, and users running versions from 4.20.0 up to but not including 4.20.16 are affected. Red Hat rates the security impact as moderate and recommends upgrading to the patched version. No CVSS score is provided in the advisory, and no active exploitation has been reported.
Potential Impact
The vulnerability causes excessive CPU consumption when building the archive index in the golang archive/zip package, potentially leading to degraded system performance or denial of service conditions due to resource exhaustion. The impact is rated as moderate by Red Hat. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Container Platform version 4.20.16. Users should upgrade to this version using the OpenShift CLI or web console following Red Hat's documented upgrade procedures. The vendor advisory explicitly recommends applying the updated packages and container images to remediate the issue. No additional mitigation actions are specified or required beyond upgrading.
Red Hat Security Advisory: OpenShift Container Platform 4.20.16 packages and security update
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 4.20.16. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:3855 Security Fix(es): * golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) 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 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The security advisory for Red Hat OpenShift Container Platform 4.20.16 addresses a vulnerability identified as CVE-2025-61728 in the golang archive/zip package. The issue causes excessive CPU consumption during the building of the archive index, which could impact system performance. The advisory provides updated RPM packages and container images to remediate this issue. The fix is included in the 4.20.16 release, and users running versions from 4.20.0 up to but not including 4.20.16 are affected. Red Hat rates the security impact as moderate and recommends upgrading to the patched version. No CVSS score is provided in the advisory, and no active exploitation has been reported.
Potential Impact
The vulnerability causes excessive CPU consumption when building the archive index in the golang archive/zip package, potentially leading to degraded system performance or denial of service conditions due to resource exhaustion. The impact is rated as moderate by Red Hat. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Container Platform version 4.20.16. Users should upgrade to this version using the OpenShift CLI or web console following Red Hat's documented upgrade procedures. The vendor advisory explicitly recommends applying the updated packages and container images to remediate the issue. No additional mitigation actions are specified or required beyond upgrading.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:3851
- Cve Count
- 1
- State
- PUBLISHED
Threat ID: 6a160976e29bf47b50641fe5
Added to database: 05/26/2026, 20:58:30 UTC
Last enriched: 08/14/2026, 22:29:48 UTC
Last updated: 09/13/2026, 10:01:28 UTC
Views: 113
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