CVE-2026-73269: Red Hat multicluster engine for Kubernetes 2.10 · Improper Privilege Management
Affects Red Hat multicluster engine for Kubernetes 2.10Source CVE Database V5
Not known to be exploited · CVSS 9.9 Critical.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 12 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hatmulticluster engine for Kubernetes 2.10 | Affected– | Fixed in– |
| Red Hatmulticluster engine for Kubernetes 2.11 | Affected– | Fixed in– |
| Red Hatmulticluster engine for Kubernetes 2.17 | Affected– | Fixed in– |
| Red Hatmulticluster engine for Kubernetes 2.6 | Affected– | Fixed in– |
| Red Hatmulticluster engine for Kubernetes 2.8 | Affected– | Fixed in– |
| Red Hatmulticluster engine for Kubernetes 2.9 | Affected– | Fixed in– |
AI-suggested
Red Hat advises restricting the ability to create ClusterCurator resources by implementing Kubernetes RBAC policies that limit create permissions for clustercurators.cluster.open-cluster-management.io to trusted administrators or service accounts only. Alternatively, deploying an admission controller to enforce that the metadata.name and metadata.namespace fields are identical when creating ClusterCurator resources can prevent the vulnerability. Check the Red Hat advisory for updates: https://access.redhat.com/security/cve/CVE-2026-73269
Description
A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools.
References
- access.redhat.com/security/cve/CVE-2026-73269 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2514220 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:59556 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:59593 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:59557 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:59558 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:59559 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:59579 (opens in a new tab)