Red Hat Security Advisory: OpenShift Container Platform 4.18.35 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 4.18.35. 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.
AI Analysis
Technical Summary
This advisory covers security fixes in Red Hat OpenShift Container Platform 4.18.35 for two Golang vulnerabilities: CVE-2025-61726, a memory exhaustion vulnerability in the net/url package during query parameter parsing, and CVE-2025-58183, an unbounded memory allocation vulnerability in the archive/tar package when parsing GNU sparse maps. Both vulnerabilities relate to improper resource management that could be exploited to exhaust memory. The advisory provides updated RPM packages and container images to remediate these issues. Users should upgrade their OpenShift Container Platform 4.18 clusters using the official update channels and tools.
Potential Impact
The vulnerabilities could allow an attacker to cause memory exhaustion on systems running affected versions of OpenShift Container Platform 4.18, potentially leading to denial of service or degraded performance. No known exploits in the wild have been reported. The issues affect Golang components used within the platform, impacting resource handling during specific parsing operations.
Mitigation Recommendations
Red Hat has released updated packages and container images for OpenShift Container Platform 4.18.35 that fix these vulnerabilities. Users should upgrade to these updated packages and images via the appropriate release channels using the OpenShift CLI or web console. Detailed upgrade instructions are available in Red Hat's official documentation. Patch status is confirmed with an official fix available in version 4.18.35.
Red Hat Security Advisory: OpenShift Container Platform 4.18.35 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 4.18.35. 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.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers security fixes in Red Hat OpenShift Container Platform 4.18.35 for two Golang vulnerabilities: CVE-2025-61726, a memory exhaustion vulnerability in the net/url package during query parameter parsing, and CVE-2025-58183, an unbounded memory allocation vulnerability in the archive/tar package when parsing GNU sparse maps. Both vulnerabilities relate to improper resource management that could be exploited to exhaust memory. The advisory provides updated RPM packages and container images to remediate these issues. Users should upgrade their OpenShift Container Platform 4.18 clusters using the official update channels and tools.
Potential Impact
The vulnerabilities could allow an attacker to cause memory exhaustion on systems running affected versions of OpenShift Container Platform 4.18, potentially leading to denial of service or degraded performance. No known exploits in the wild have been reported. The issues affect Golang components used within the platform, impacting resource handling during specific parsing operations.
Mitigation Recommendations
Red Hat has released updated packages and container images for OpenShift Container Platform 4.18.35 that fix these vulnerabilities. Users should upgrade to these updated packages and images via the appropriate release channels using the OpenShift CLI or web console. Detailed upgrade instructions are available in Red Hat's official documentation. Patch status is confirmed with an official fix available in version 4.18.35.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:3875
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-61726"]
- Cvss Version
- null
Threat ID: 6a160968e29bf47b5062dd9d
Added to database: 05/26/2026, 20:58:16 UTC
Last enriched: 07/30/2026, 11:41:56 UTC
Last updated: 07/31/2026, 19:30:10 UTC
Views: 60
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