Vulnerability · Published Oct 13, 2025 · Assigned by GitHub_M
CVE-2025-59836Omni is Vulnerable to DoS via Empty Create/Update Resource Requests
Medium 5.3
In plain English
A medium-severity null pointer dereference in omni from siderolabs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/siderolabs/omni | 1.1.5 | GHSA-4p3p-cr38-v5xp |
| Go | github.com/siderolabs/omni | 1.0.2 | GHSA-4p3p-cr38-v5xp |
| Go | github.com/siderolabs/omni | 1.0.2, 1.1.5 | GO-2025-4021 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siderolabs | omni | >= 1.1.0-beta.0, < 1.1.5< 1.0.2 |
Weakness: CWE-703, CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L