CVE-2025-59836: Siderolabs Omni

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to 1.1.5 and 1.0.2, there is a nil pointer dereference vulnerability in the Omni Resource Service allows unauthenticated users to cause a server panic and denial of service by sending empty create/update resource requests through the API endpoints. The vulnerability exists in the isSensitiveSpec function which calls grpcomni.CreateResource without checking if the resource's metadata field is nil. When a resource is created with an empty Metadata field, the CreateResource function attempts to access resource.Metadata.Version causing a segmentation fault. This vulnerability is fixed in 1.1.5 and 1.0.2.

Affected products

• Siderolabs Omni: before 1.0.2 (fixed in 1.0.2); from 1.1.0, before 1.1.5 (fixed in 1.1.5)

Published 2025-10-13. Last modified 2026-10-08.