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High7.3Red Hat Linux

High [CVE-2026-43869] Security bypass due to improper certificate validation

This high-severity Red Hat Linux advisory covers CVE-2026-43869 affecting Cryostat 4 on RHEL 9, Red Hat Advanced Cluster Management for Kubernetes 2.13, Red Hat Advanced Cluster Management for Kubernetes 2.14.

CVE-2026-43869 Published May 5, 2026
CVE-2026-43869
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Security bypass due to improper certificate validation. Red Hat rates this important (CVSS 7.3).

Weakness: CWE-295. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779212259, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118, cryostat/cryostat-storage-rhel9:4.2.0, libthrift, rhosdt/tempo-rhel9:1781589494.

Resolved in Red Hat advisory RHSA-2026:21769 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; and 17 more.

Affected versions
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779212259
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118
  • cryostat/cryostat-storage-rhel9:4.2.0-16
  • libthrift
  • rhosdt/tempo-rhel9:1781589494
  • rhacm2/acm-grafana-rhel9:1782383730
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439
  • rhacm2/acm-grafana-rhel9:1780926805
  • rhacm2/acm-grafana-rhel9:1780677003

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

Fixed versions
  • RHSA-2026:21769

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-2026:21769 (`sudo dnf update` / `yum update`).

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

Discussion(0)

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