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Advisory severityCritical9.1Vendor: HighRed Hat Linux

Critical [CVE-2026-33186] Authorization bypass due to improper HTTP/2 path validation

This critical-severity Red Hat Linux advisory covers CVE-2026-33186 affecting Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-33186 Source published

VulniPulse record published

CVE-2026-33186
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

Summary

Authorization bypass due to improper HTTP/2 path validation. Red Hat rates this important (CVSS 9.1).

Weakness: CWE-551. Affected package(s): rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9:1780078429, odf4/odf-csi-addons-sidecar-rhel9:1781550957, rhtas/trillian-logserver-rhel9:1776243434, openshift4/ose-cluster-olm-rhel9-operator:1779787336, rhdh/rhdh-rhel9-operator:1774544220, openshift4/ose-csi-driver-nfs-rhel9:1778242571.

Resolved in Red Hat advisory RHSA-2026:27893 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat OpenShift Container Platform 4.16; Red Hat OpenShift Container Platform 4.17; Red Hat OpenShift Container Platform 4.18; Red Hat Satellite 6.16 for RHEL 8; and 134 more.

Is CVE-2026-33186 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-33186 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-33186?

Upgrade to a fixed release named by Red Hat:

  • RHSA-2026:27893

Confirm against the vendor advisory before you patch.

Affected versions
  • rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9:1780078429
  • odf4/odf-csi-addons-sidecar-rhel9:1781550957
  • rhtas/trillian-logserver-rhel9:1776243434
  • openshift4/ose-cluster-olm-rhel9-operator:1779787336
  • rhdh/rhdh-rhel9-operator:1774544220
  • openshift4/ose-csi-driver-nfs-rhel9:1778242571
  • odf4/cephcsi-rhel9-operator:1781549637
  • multicluster-engine/assisted-installer-rhel9:1776949906
  • openshift4/openshift-route-controller-manager-rhel9:1780042119
  • openshift4/ose-sriov-network-webhook-rhel9:1779255322
  • odf4/odf-cli-rhel9:1781557189
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

Fixed versions
  • RHSA-2026:27893

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:27893 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

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