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CVE-2026-45726

7.6 · HIGH

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud.

Published Sep 17, 2026CWE-200EPSS 0.14%

Overview

CVE-2026-45726 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. From 1.3.0 until 1.6.6 and 1.7.3, importing a standalone Talos cluster creates an ImportedClusterSecrets resource containing the cluster's complete CA secrets bundle. The access rules in internal/backend/runtime/omni/state_access.go allow an authenticated user with the Reader role to retrieve the resource through ResourceService if the importing actor has not rotated those secrets, exposing Kubernetes, Talos, and etcd CA private keys plus the service-account key. The Kubernetes CA private key permits certificate signing for privileged identities such as system:masters and provides control of the imported cluster outside Omni's authorization boundary, including its workloads, credentials, and secrets. This issue is fixed in versions 1.6.6 and 1.7.3.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/siderolabs/omni/commit/25fa9e141ee00285e70210ed40d11e4e457c871dGitHubgithub.com/siderolabs/omni/commit/a224cb020f3aaca2bc21c3e32a38eb4a37e531e8GitHubgithub.com/siderolabs/omni/commit/b8ca100c4539ea83f0ac2e53dcd523e6e5b68111GitHubgithub.com/siderolabs/omni/pull/2807GitHubgithub.com/siderolabs/omni/releases/tag/v1.6.6GitHubgithub.com/siderolabs/omni/releases/tag/v1.7.3GitHubgithub.com/siderolabs/omni/security/advisories/GHSA-wv8c-6mx2-xf4j

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45726?

CVE-2026-45726 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

How severe is CVE-2026-45726?

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-45726?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45726?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45726 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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