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Critical9.9Vendor: HighRed Hat Linux

Critical [CVE-2026-22797] OpenStack keystonemiddleware: Privilege escalation and user impersonation via forged authentication headers

This critical-severity Red Hat Linux advisory covers CVE-2026-22797 affecting Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18, Red Hat OpenShift Container Platform 4.19.

CVE-2026-22797 Published Jan 19, 2026
CVE-2026-22797
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

OpenStack keystonemiddleware: Privilege escalation and user impersonation via forged authentication headers. Red Hat rates this important (CVSS 9.9).

Weakness: CWE-290. Affected package(s): openshift4/ose-ironic-rhel9:1772029626, openshift4/ose-ironic-rhel9:1774266098, openshift4/ose-ironic-rhel9:1773138063, openshift4/ose-ironic-rhel9:1772477045, openshift4/ose-ironic-rhel9:1772176749.

Resolved in Red Hat advisory RHSA-2026:3402 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat OpenShift Container Platform 4.17; Red Hat OpenShift Container Platform 4.18; Red Hat OpenShift Container Platform 4.19; Red Hat OpenShift Container Platform 4.20; and 1 more.

Affected versions
  • openshift4/ose-ironic-rhel9:1772029626
  • openshift4/ose-ironic-rhel9:1774266098
  • openshift4/ose-ironic-rhel9:1773138063
  • openshift4/ose-ironic-rhel9:1772477045
  • openshift4/ose-ironic-rhel9:1772176749

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • RHSA-2026:3402

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:3402 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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