Red Hat Security Advisory: OpenShift Container Platform 4.20.6 bug fix 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 container images for Red Hat OpenShift Container Platform 4.20.6. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/156635 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/4.20/html/release_notes/ Security Fix(es): * helm.sh/helm/v3: Helm Chart JSON Schema Denial of Service (CVE-2025-55199) * helm.sh/helm/v3: Helm YAML Parsing Panic Vulnerability (CVE-2025-55198) 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
A vulnerability (CVE-2025-55198) was found in helm.sh/helm/v3 used by Red Hat OpenShift Container Platform. It involves improper validation of type errors during parsing of Chart.yaml and index.yaml files, which can trigger a panic and cause an application-level denial of service. Exploitation requires user interaction with a malformed chart file. The vulnerability is addressed in OpenShift Container Platform 4.20.6 through updated container images and packages. Red Hat rates the security impact as moderate with a CVSS base score of 6.5 (availability impact high, no confidentiality or integrity impact).
Potential Impact
Successful exploitation can cause a denial of service by triggering a panic in Helm's YAML parsing component, potentially disrupting application deployment or management within OpenShift clusters. There is no impact on confidentiality or integrity. The vulnerability requires user interaction and network access to deliver a malformed chart file.
Mitigation Recommendations
Red Hat has released OpenShift Container Platform 4.20.6 which includes fixes for this vulnerability. Users should upgrade to version 4.20.6 or later using the OpenShift CLI or web console as per Red Hat's official upgrade instructions. Additionally, ensuring that YAML files are properly formatted before processing with Helm can mitigate the risk. No other mitigations are specified by the vendor.
Red Hat Security Advisory: OpenShift Container Platform 4.20.6 bug fix 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 container images for Red Hat OpenShift Container Platform 4.20.6. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/156635 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/4.20/html/release_notes/ Security Fix(es): * helm.sh/helm/v3: Helm Chart JSON Schema Denial of Service (CVE-2025-55199) * helm.sh/helm/v3: Helm YAML Parsing Panic Vulnerability (CVE-2025-55198) 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
A vulnerability (CVE-2025-55198) was found in helm.sh/helm/v3 used by Red Hat OpenShift Container Platform. It involves improper validation of type errors during parsing of Chart.yaml and index.yaml files, which can trigger a panic and cause an application-level denial of service. Exploitation requires user interaction with a malformed chart file. The vulnerability is addressed in OpenShift Container Platform 4.20.6 through updated container images and packages. Red Hat rates the security impact as moderate with a CVSS base score of 6.5 (availability impact high, no confidentiality or integrity impact).
Potential Impact
Successful exploitation can cause a denial of service by triggering a panic in Helm's YAML parsing component, potentially disrupting application deployment or management within OpenShift clusters. There is no impact on confidentiality or integrity. The vulnerability requires user interaction and network access to deliver a malformed chart file.
Mitigation Recommendations
Red Hat has released OpenShift Container Platform 4.20.6 which includes fixes for this vulnerability. Users should upgrade to version 4.20.6 or later using the OpenShift CLI or web console as per Red Hat's official upgrade instructions. Additionally, ensuring that YAML files are properly formatted before processing with Helm can mitigate the risk. No other mitigations are specified by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:22257
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-55199"]
Threat ID: 6a3de72d4853345fc1127f7a
Added to database: 06/26/2026, 02:42:53 UTC
Last enriched: 08/16/2026, 17:19:34 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 114
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