Medium5.9Red Hat Linux

Medium [CVE-2026-32281] Go crypto/x509: Denial of Service via inefficient certificate chain validation

This medium-severity Red Hat Linux advisory covers CVE-2026-32281 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 7.

CVE-2026-32281 Published Apr 8, 2026

CVE-2026-32281

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Go crypto/x509: Denial of Service via inefficient certificate chain validation. Red Hat rates this moderate (CVSS 5.9).

Weakness: CWE-1050. Affected package(s): grafana-pcp, skopeo, host-metering, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, openshift-service-mesh/kiali-rhel9:1779520708, quay/quay-rhel9:1779922205.

Resolved in Red Hat advisory RHSA-2026:10217 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.

Affected versions

grafana-pcp-0:5.1.1-14.el9_6
skopeo-2:1.22.2-2.el10_2
host-metering-0:1.4.0-7.el7_9
multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753
openshift-service-mesh/kiali-rhel9:1779520708
quay/quay-rhel9:1779922205
quay/quay-rhel8:1779822261
buildah-2:1.43.1-2.el9_8
openshift-logging/logging-loki-rhel9:1781193075
yggdrasil-worker-forwarder-0:0.0.3-5.el9sat
custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9:1780101236
compliance/openshift-compliance-operator-bundle:1781605005

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

Fixed versions

RHSA-2026:10217

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-2026:10217 (`sudo dnf update` / `yum update`).

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

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