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High7.5Red Hat Linux

High [CVE-2026-12143] Form field override via CRLF injection

This high-severity Red Hat Linux advisory covers CVE-2026-12143 affecting Red Hat Advanced Cluster Security for Kubernetes 4.10, Red Hat Advanced Cluster Security for Kubernetes 4.9, Red Hat Developer Hub 1.10.

CVE-2026-12143 Published Jun 12, 2026
CVE-2026-12143
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Form field override via CRLF injection. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-93.

Affected package(s): cluster-observability-operator/troubleshooting-panel-console-plugin-rhel9:1782839494, openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, cluster-observability-operator/distributed-tracing-console-plugin-pf6-rhel9:1782839193, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9:1782839981.

Resolved in Red Hat advisory RHSA-2026:33160 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; Red Hat Developer Hub 1.10; Red Hat Hardened Images; and 45 more.

Affected versions
  • cluster-observability-operator/troubleshooting-panel-console-plugin-rhel9:1782839494
  • openshift-service-mesh/kiali-ossmc-rhel9:1782201851
  • openshift-service-mesh/kiali-ossmc-rhel9:1782231869
  • cluster-observability-operator/distributed-tracing-console-plugin-pf6-rhel9:1782839193
  • cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996
  • cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9:1782839981
  • cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9:1782840519
  • cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539
  • cluster-observability-operator/monitoring-console-plugin-rhel9:1782838476
  • openshift-service-mesh/kiali-ossmc-rhel9:1782201894
  • openshift-service-mesh/kiali-ossmc-rhel9:1782201696
  • cluster-observability-operator/distributed-tracing-console-plugin-rhel9:1782838753

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

Fixed versions
  • RHSA-2026:33160

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-2026:33160 (`sudo dnf update` / `yum update`).

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

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