What is CVE-2026-10090?

CVE-2026-10090 is a critical-severity vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2, classified under Privilege Defined With Unsafe Actions. CVSS score: 9.9/10. Published 2026-08-05.

How severe is CVE-2026-10090?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Privilege escalation in Red Hat Advanced Cluster Management For Kubernetes 2

CVE-2026-10090

A flaw was found in the Application Subscription controller (multicluster-operators-subscription) of Red Hat Advanced Cluster Management for Kubernetes (ACM). A user with namespace-scoped "edit" privileges in an ACM hub namespace can creat…

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Red Hat Advanced Cluster Management For Kubernetes 2

Weakness classification (CWE)

CWE-267 — Privilege Defined With Unsafe Actions

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-10090?: CVE-2026-10090 is a critical-severity vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2, classified under Privilege Defined With Unsafe Actions. CVSS score: 9.9/10. Published 2026-08-05.
How severe is CVE-2026-10090?: Critical severity. CVSS v3 base score is 9.9 out of 10.