Sidero Labs Omni up to 1.6.5/1.7.2 ResourceService state_access.go improper authorization

Summaryinfo

A vulnerability, which was classified as very critical, has been found in Sidero Labs Omni up to 1.6.5/1.7.2. The affected element is an unknown function of the file internal/backend/runtime/omni/state_access.go of the component ResourceService. Performing a manipulation results in improper authorization. This vulnerability is known as CVE-2026-45726. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Sidero Labs Omni up to 1.6.5/1.7.2. It has been classified as very critical. This affects an unknown functionality of the file internal/backend/runtime/omni/state_access.go of the component ResourceService. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-45726 since 05/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/17/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 1.6.6 or 1.7.3 eliminates this vulnerability.

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Productinfo

Vendor

• Sidero Labs

Name

• Omni

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5
• 1.7.0
• 1.7.1
• 1.7.2

CPE 2.3info

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CPE 2.2info

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