Red Hat Security Advisory: OpenShift Container Platform 4.19.29 security and extras update
Red Hat OpenShift Container Platform 4. 18. 38 includes a security update addressing an authorization bypass vulnerability in the gRPC-Go library due to improper HTTP/2 path validation (CVE-2026-33186). This vulnerability could allow unauthorized access under certain conditions. Red Hat has rated this update as having an Important security impact and advises all OpenShift Container Platform 4. 18 users to upgrade to the updated packages and images. Instructions for upgrading are available through the OpenShift CLI or web console. The update fixes the issue by correcting the authorization logic in the affected gRPC-Go component.
AI Analysis
Technical Summary
The security advisory for Red Hat OpenShift Container Platform 4.18.38 addresses CVE-2026-33186, an authorization bypass vulnerability in the gRPC-Go library (google.golang.org/grpc/authz). The flaw arises from improper HTTP/2 path validation, which could allow an attacker to bypass authorization checks. This vulnerability affects the OpenShift Container Platform 4.18 release and related container images. Red Hat has released updated RPM packages and container images to remediate this issue. Users are advised to upgrade their clusters using the provided official channels and documentation.
Potential Impact
The vulnerability allows an authorization bypass due to improper HTTP/2 path validation in the gRPC-Go library used by OpenShift Container Platform. This could lead to unauthorized access to resources or operations that should be restricted. Red Hat classifies the security impact as Important, indicating a high risk but not necessarily critical. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated RPM packages and container images for OpenShift Container Platform 4.18.38 that fix this vulnerability. All users of OpenShift Container Platform 4.18 are strongly advised to upgrade to these updated packages and images as soon as they become available in their release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Detailed upgrade instructions are provided in the official Red Hat documentation. Patch status is confirmed as available and official.
Red Hat Security Advisory: OpenShift Container Platform 4.19.29 security and extras update
Description
Red Hat OpenShift Container Platform 4. 18. 38 includes a security update addressing an authorization bypass vulnerability in the gRPC-Go library due to improper HTTP/2 path validation (CVE-2026-33186). This vulnerability could allow unauthorized access under certain conditions. Red Hat has rated this update as having an Important security impact and advises all OpenShift Container Platform 4. 18 users to upgrade to the updated packages and images. Instructions for upgrading are available through the OpenShift CLI or web console. The update fixes the issue by correcting the authorization logic in the affected gRPC-Go component.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The security advisory for Red Hat OpenShift Container Platform 4.18.38 addresses CVE-2026-33186, an authorization bypass vulnerability in the gRPC-Go library (google.golang.org/grpc/authz). The flaw arises from improper HTTP/2 path validation, which could allow an attacker to bypass authorization checks. This vulnerability affects the OpenShift Container Platform 4.18 release and related container images. Red Hat has released updated RPM packages and container images to remediate this issue. Users are advised to upgrade their clusters using the provided official channels and documentation.
Potential Impact
The vulnerability allows an authorization bypass due to improper HTTP/2 path validation in the gRPC-Go library used by OpenShift Container Platform. This could lead to unauthorized access to resources or operations that should be restricted. Red Hat classifies the security impact as Important, indicating a high risk but not necessarily critical. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated RPM packages and container images for OpenShift Container Platform 4.18.38 that fix this vulnerability. All users of OpenShift Container Platform 4.18 are strongly advised to upgrade to these updated packages and images as soon as they become available in their release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Detailed upgrade instructions are provided in the official Red Hat documentation. Patch status is confirmed as available and official.
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: 5/26/2026, 8:57:56 PM
Last enriched: 5/26/2026, 9:00:36 PM
Last updated: 5/27/2026, 4:53:23 AM
Views: 2
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