Cluster-curator-controller: cluster-curator-controller: spec.install.overridejob allows arbitrary job spec injection (Red Hat multicluster engine for Kubernetes 2.10)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.88 % · percentile 59 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Awaiting Analysis
Description
A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when unmarshaling the spec.install.overrideJob raw extension. Successful exploitation allows the injected Job to run with the controller's elevated privileges, leading to arbitrary code execution and privilege escalation, potentially accessing cluster-wide secrets.
Weaknesses (CWE)
- CWE-94 — Improper Control of Generation of Code
References
- https://access.redhat.com/errata/RHSA-2026:59556
- https://access.redhat.com/errata/RHSA-2026:59557
- https://access.redhat.com/errata/RHSA-2026:59558
- https://access.redhat.com/errata/RHSA-2026:59559
- https://access.redhat.com/errata/RHSA-2026:59579
- https://access.redhat.com/errata/RHSA-2026:59593
- https://access.redhat.com/security/cve/CVE-2026-73268
- https://bugzilla.redhat.com/show_bug.cgi?id=2514219
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | redhat |
| CVSS 3.1 | CRITICAL 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-57442
- GCVE · GCVE-0-2026-73268
Affected products
| Product | Versions |
|---|---|
| Red Hat · multicluster engine for Kubernetes 2.10 | unaffected 1787201612 < * |
| Red Hat · multicluster engine for Kubernetes 2.11 | unaffected 1787238383 < * |
| Red Hat · multicluster engine for Kubernetes 2.17 | unaffected 1786750700 < * |
| Red Hat · multicluster engine for Kubernetes 2.6 | unaffected 1787264185 < * |
| Red Hat · multicluster engine for Kubernetes 2.8 | unaffected 1787259011 < * |
| Red Hat · multicluster engine for Kubernetes 2.9 | unaffected 1787201646 < * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |