What’s Vulnerable › Vulnerabilities

CVE-2025-59836: Omni is Vulnerable to DoS via Empty Create/Update Resource Requests

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-13 · updated 2026-10-08
• Weakness: CWE-476

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 products

• siderolabs omni: before 1.0.2; from 1.1.0 before 1.1.5 — fixed in 1.0.2, 1.1.5

How to fix

Upgrade to a fixed version: siderolabs omni 1.0.2, 1.1.5. Check the vendor advisory for mitigations.

References

• https://github.com/siderolabs/omni/commit/1396083f766a1b0380e9949968d7fc17b7afecaa
• https://github.com/siderolabs/omni/commit/1fd954af64985a8b3dbf5b11deddbf7cd953f5ae
• https://github.com/siderolabs/omni/security/advisories/GHSA-4p3p-cr38-v5xp

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