CVE-2026-75485 Must-gather: /tmp/kubeconfig retention
The must-gather tool exposes proxy basic-auth credentials in its archive by bypassing redaction, allowing attackers with archive access to read sensitive authentication data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75485?
CVE-2026-75485 is a medium-severity vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.11, published on 18 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-532
Which versions are affected by CVE-2026-75485?
How do I fix CVE-2026-75485?
No fix has been published for CVE-2026-75485 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75485 being exploited?
There is no known exploitation of CVE-2026-75485 in the wild and no public exploit code.
Sources
Also known as GHSA-28f5-gvgw-386q.