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-related vulnerabilities. CVE-2025-61726 involves memory exhaustion during query parameter parsing in the net/url package. CVE-2025-58183 involves unbounded memory allocation when parsing GNU sparse map in the archive/tar package. Both issues could potentially cause denial of service through resource exhaustion. The advisory provides updated RPM packages and container images to remediate these issues. The affected versions are OpenShift Container Platform 4.18 releases prior to 4.18.35.
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 conditions. No known exploits in the wild have been reported. The impact is rated as important by Red Hat Product Security.
Mitigation Recommendations
A security update is available in Red Hat OpenShift Container Platform 4.18.35. Users should upgrade to this version using the OpenShift CLI or web console as per Red Hat's official upgrade instructions. The vendor manages remediation through these updated packages and container images. No additional mitigations are specified beyond applying the update.
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-related vulnerabilities. CVE-2025-61726 involves memory exhaustion during query parameter parsing in the net/url package. CVE-2025-58183 involves unbounded memory allocation when parsing GNU sparse map in the archive/tar package. Both issues could potentially cause denial of service through resource exhaustion. The advisory provides updated RPM packages and container images to remediate these issues. The affected versions are OpenShift Container Platform 4.18 releases prior to 4.18.35.
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 conditions. No known exploits in the wild have been reported. The impact is rated as important by Red Hat Product Security.
Mitigation Recommendations
A security update is available in Red Hat OpenShift Container Platform 4.18.35. Users should upgrade to this version using the OpenShift CLI or web console as per Red Hat's official upgrade instructions. The vendor manages remediation through these updated packages and container images. No additional mitigations are specified beyond applying the update.
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"]
- State
- PUBLISHED
Threat ID: 6a160968e29bf47b5062dd9d
Added to database: 05/26/2026, 20:58:16 UTC
Last enriched: 08/14/2026, 20:08:12 UTC
Last updated: 09/14/2026, 01:36:23 UTC
Views: 86
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