Red Hat Product Errata RHSA-2026:20322 - Security Advisory Issued: 2026-05-27 Updated: 2026-05-27 RHSA-2026:20322 - Security Advisory Overview Updated Packages Synopsis Important: Red Hat build of MicroShift 4.19.32 security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic Red Hat build of MicroShift release 4.19.32 is now available with updates to packages and images that include a security update. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description Red Hat build of MicroShift is Red Hat's light-weight Kubernetes orchestration solution designed for edge device deployments and is built from the edge capabilities of Red Hat OpenShift Container Platform. MicroShift is an application that is deployed on top of Red Hat Enterprise Linux devices at the edge, providing an efficient way to operate single-node clusters in these low-resource environments. This advisory contains the RPM packages for Red Hat build of MicroShift 4.19.32. Read the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:20041 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) All Red Hat build of MicroShift 4.19 users are advised to use these updated packages and images when they are available in the RPM repository. Solution For MicroShift 4.19, read the following documentation for important instructions on how to install the latest RPMs and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/red_hat_build_of_microshift/4.19/html/red_hat_build_of_microshift_release_notes/index Affected Products Red Hat OpenShift Container Platform 4.19 for RHEL 9 x86_64 Red Hat OpenShift Container Platform for Power 4.19 for RHEL 9 ppc64le Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.19 for RHEL 9 s390x Red Hat OpenShift Container Platform for ARM 64 4.19 for RHEL 9 aarch64 Fixes BZ - 2449833 - CVE-2026-33186 google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation CVEs CVE-2026-33186 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat OpenShift Container Platform 4.19 for RHEL 9 SRPM microshift-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.src.rpm SHA-256: dce4ad9c98350cb25e17d75da7862d916800ff3c218402d93032a99e05f0741f x86_64 microshift-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.x86_64.rpm SHA-256: c5fca6013130f9c8cff6a04f5bed463a2253cdb75b8282ec5c6e962ba36a2cf1 microshift-ai-model-serving-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.x86_64.rpm SHA-256: 497db82e08aa409d8860a49f1747ee7a7f052768d972f8d7ea8319ce6954787b microshift-ai-model-serving-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 9e16562867b4fd0d1ea0cfdf59ebed38313d29dee610dab6cad2229c6c895f74 microshift-gateway-api-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.x86_64.rpm SHA-256: c3eb4cdfc468bd5cb72556b2d81cdec3eeb4f65ebf825188c5c0da4d3b0d0a5b microshift-gateway-api-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 51a483055478c76618fb55cb6a520107526f94f98bef87098a6f2ec44e46ceab microshift-greenboot-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: d391dd956c1effb9eb699aef0544b5af1e039818e25343d83d231e99f3900a0a microshift-low-latency-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 34a47a508d35cf75366893f806e4d3dbd17ff518368251b79e5fb231fa991b37 microshift-multus-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.x86_64.rpm SHA-256: 2dd6e7f1950fce09e5445dd124b1136f12cdb575e4ac2773d82efaa4da985436 microshift-multus-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: b52bca50cc1afb73e6e70c6f094855ddffcd8f66254f1f9b17054065e910a34d microshift-networking-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.x86_64.rpm SHA-256: 69fd657c79c77207ab74a59561ca93f9798c870b8207c3d0279b74676a0df568 microshift-observability-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: f6428ab4dd2a83cd91d8248e0521d51a5c5ff4fef4be0e2af136c4e788a7ad55 microshift-olm-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.x86_64.rpm SHA-256: f87bb5dedea4b30519911afc73fac1018d7277aa7592d70c99fb0d10ad998c96 microshift-olm-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: d166d5f0a8452c9ecc88a8e433af347ac0ada1002589ddaccf55522a3268169b microshift-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 6aefec8e4adad59cbdbb22ce7377e93eadc92595fcbc5119d244642e211d1a34 microshift-selinux-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 841cb6e64a34d510879c74c3e50a41e7ee245758115b9d5dcfd2fc899e936ee3 Red Hat OpenShift Container Platform for Power 4.19 for RHEL 9 SRPM microshift-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.src.rpm SHA-256: dce4ad9c98350cb25e17d75da7862d916800ff3c218402d93032a99e05f0741f ppc64le microshift-ai-model-serving-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 9e16562867b4fd0d1ea0cfdf59ebed38313d29dee610dab6cad2229c6c895f74 microshift-gateway-api-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 51a483055478c76618fb55cb6a520107526f94f98bef87098a6f2ec44e46ceab microshift-greenboot-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: d391dd956c1effb9eb699aef0544b5af1e039818e25343d83d231e99f3900a0a microshift-low-latency-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 34a47a508d35cf75366893f806e4d3dbd17ff518368251b79e5fb231fa991b37 microshift-multus-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: b52bca50cc1afb73e6e70c6f094855ddffcd8f66254f1f9b17054065e910a34d microshift-observability-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: f6428ab4dd2a83cd91d8248e0521d51a5c5ff4fef4be0e2af136c4e788a7ad55 microshift-olm-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: d166d5f0a8452c9ecc88a8e433af347ac0ada1002589ddaccf55522a3268169b microshift-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 6aefec8e4adad59cbdbb22ce7377e93eadc92595fcbc5119d244642e211d1a34 microshift-selinux-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 841cb6e64a34d510879c74c3e50a41e7ee245758115b9d5dcfd2fc899e936ee3 Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.19 for RHEL 9 SRPM microshift-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.src.rpm SHA-256: dce4ad9c98350cb25e17d75da7862d916800ff3c218402d93032a99e05f0741f s390x microshift-ai-model-serving-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 9e16562867b4fd0d1ea0cfdf59ebed38313d29dee610dab6cad2229c6c895f74 microshift-gateway-api-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 51a483055478c76618fb55cb6a520107526f94f98bef87098a6f2ec44e46ceab microshift-greenboot-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: d391dd956c1effb9eb699aef0544b5af1e039818e25343d83d231e99f3900a0a microshift-low-latency-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 34a47a508d35cf75366893f806e4d3dbd17ff518368251b79e5fb231fa991b37 microshift-multus-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: b52bca50cc1afb73e6e70c6f094855ddffcd8f66254f1f9b17054065e910a34d microshift-observability-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: f6428ab4dd2a83cd91d8248e0521d51a5c5ff4fef4be0e2af136c4e788a7ad55 microshift-olm-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: d166d5f0a8452c9ecc88a8e433af347ac0ada1002589ddaccf55522a3268169b microshift-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 6aefec8e4adad59cbdbb22ce7377e93eadc92595fcbc5119d244642e211d1a34 microshift-selinux-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 841cb6e64a34d510879c74c3e50a41e7ee245758115b9d5dcfd2fc899e936ee3 Red Hat OpenShift Container Platform for ARM 64 4.19 for RHEL 9 SRPM microshift-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.src.rpm SHA-256: dce4ad9c98350cb25e17d75da7862d916800ff3c218402d93032a99e05f0741f aarch64 microshift-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.aarch64.rpm SHA-256: 7901f6cc0c83febf7b2c962e1c9fda0672fc197e8bfcd6f51cb2aa03c7e06f6e microshift-ai-model-serving-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 9e16562867b4fd0d1ea0cfdf59ebed38313d29dee610dab6cad2229c6c895f74 microshift-gateway-api-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.aarch64.rpm SHA-256: fe9f15855340b11c545d34d3e0d91bac6d37e348a72b9a9adf66206b8962d9b2 microshift-gateway-api-release-info-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 51a483055478c76618fb55cb6a520107526f94f98bef87098a6f2ec44e46ceab microshift-greenboot-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: d391dd956c1effb9eb699aef0544b5af1e039818e25343d83d231e99f3900a0a microshift-low-latency-4.19.32-202605212036.p0.g27d51c3.assembly.4.19.32.el9.noarch.rpm SHA-256: 34a47a508d35cf75366893f806e4d3dbd17ff51836