CVE-2026-75485: Must-gather: /tmp/kubeconfig retention

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-18 · updated 2026-09-05
Weakness: CWE-532

Description

A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. The cluster Proxy object is dumped in raw form, bypassing the oc inspect redaction that would normally sanitize sensitive fields. This exposes proxy basic-auth credentials in the must-gather archive, potentially disclosing sensitive authentication information to anyone with access to the archive.

Affected products

Red Hat Advanced Cluster Management for Kubernetes 2.11: all versions — fixed in 1787263322
Red Hat Advanced Cluster Management for Kubernetes 2.13: all versions — fixed in 1787260453
Red Hat Advanced Cluster Management for Kubernetes 2.14: all versions — fixed in 1787189811
Red Hat Advanced Cluster Management for Kubernetes 2.15: all versions — fixed in 1787238730
Red Hat Advanced Cluster Management for Kubernetes 2.16: all versions — fixed in 1787234748
Red Hat Advanced Cluster Management for Kubernetes 2.17: all versions — fixed in 1787228698

How to fix

Upgrade to a fixed version: Red Hat Advanced Cluster Management for Kubernetes 2.11 1787263322; Red Hat Advanced Cluster Management for Kubernetes 2.13 1787260453; Red Hat Advanced Cluster Management for Kubernetes 2.14 1787189811; Red Hat Advanced Cluster Management for Kubernetes 2.15 1787238730; Red Hat Advanced Cluster Management for Kubernetes 2.16 1787234748; Red Hat Advanced Cluster Management for Kubernetes 2.17 1787228698. Check the vendor advisory for mitigations.

References

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