Red Hat Security Advisory: OpenShift Container Platform 4.19.29 security and extras 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 4.19.29. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:10093 Security Fix(es): * google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186) 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 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.
AI Analysis
Technical Summary
This advisory addresses CVE-2026-33186, an authorization bypass vulnerability in the gRPC-Go library used by Red Hat OpenShift Container Platform 4.19. The issue arises from improper HTTP/2 path validation in the grpc/authz package, potentially allowing unauthorized access. Red Hat has released updated RPM packages and container images in OpenShift Container Platform version 4.19.29 to fix this vulnerability. The update is rated as having an Important security impact by Red Hat Product Security. Users should upgrade their clusters using the OpenShift CLI or web console following Red Hat's documented procedures.
Potential Impact
The vulnerability allows an authorization bypass due to improper HTTP/2 path validation in the gRPC-Go library, which could enable unauthorized access within the affected OpenShift Container Platform deployments. The security impact is rated as Important by Red Hat, indicating a high severity level that could affect the security posture of on-premise or private cloud Kubernetes application platforms running OpenShift 4.19.
Mitigation Recommendations
Red Hat has released updated RPM packages and container images in OpenShift Container Platform 4.19.29 that address this vulnerability. Users should upgrade to these updated packages and images as soon as they are available in the appropriate release channel. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Detailed upgrade instructions are available in Red Hat's official documentation. Patch status is confirmed as available and users are strongly advised to apply this update to mitigate the vulnerability.
Red Hat Security Advisory: OpenShift Container Platform 4.19.29 security and extras 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 4.19.29. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:10093 Security Fix(es): * google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186) 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 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory addresses CVE-2026-33186, an authorization bypass vulnerability in the gRPC-Go library used by Red Hat OpenShift Container Platform 4.19. The issue arises from improper HTTP/2 path validation in the grpc/authz package, potentially allowing unauthorized access. Red Hat has released updated RPM packages and container images in OpenShift Container Platform version 4.19.29 to fix this vulnerability. The update is rated as having an Important security impact by Red Hat Product Security. Users should upgrade their clusters using the OpenShift CLI or web console following Red Hat's documented procedures.
Potential Impact
The vulnerability allows an authorization bypass due to improper HTTP/2 path validation in the gRPC-Go library, which could enable unauthorized access within the affected OpenShift Container Platform deployments. The security impact is rated as Important by Red Hat, indicating a high severity level that could affect the security posture of on-premise or private cloud Kubernetes application platforms running OpenShift 4.19.
Mitigation Recommendations
Red Hat has released updated RPM packages and container images in OpenShift Container Platform 4.19.29 that address this vulnerability. Users should upgrade to these updated packages and images as soon as they are available in the appropriate release channel. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Detailed upgrade instructions are available in Red Hat's official documentation. Patch status is confirmed as available and users are strongly advised to apply this update to mitigate the vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:8449
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a160954e29bf47b50619505
Added to database: 05/26/2026, 20:57:56 UTC
Last enriched: 07/26/2026, 01:46:34 UTC
Last updated: 07/31/2026, 19:30:09 UTC
Views: 61
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