CVE-2026-101919Hypershift: hypershift: unsanitized kubeconfig passthrough from tenant namespace to control plane
Updated under an hour ago ()
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It affects Red Hat Multicluster Engine for Kubernetes. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.42%, higher than 35% of scored CVEs.
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A flaw was found in the HyperShift operator. The operator copies user-provided Kubernetes configuration (kubeconfig) secrets directly into the privileged control plane namespace without proper validation or sanitization. An authenticated user with cluster and secret creation permissions can exploit this vulnerability by supplying a configuration containing unauthorized executable plugins. When downstream controllers consume this configuration, an attacker can achieve arbitrary code execution within the control plane.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-20
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.42% (percentile 35)
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Multicluster Engine for Kubernetes redhat:multicluster_engine | All versions | CNA record |
References
- https://access.redhat.com/security/cve/CVE-2026-101919vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2542541issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.