CVE-2026-66783
Submariner-operator: release workflow consumes same-org composite action via mutable @devel branch ref
CVSS Score
4.4
EPSS Score
0.2%
EPSS Percentile
13th
A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image.
| CWE | CWE-1357 |
| Vendor | red hat |
| Product | red hat advanced cluster management for kubernetes 2.17 |
| Published | Aug 18, 2026 |
| Last Updated | Sep 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.17
All versions affected Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.17
All versions affected Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2
All versions affected Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2
All versions affected