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CVE-2026-45726: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in siderolabs omni

0
High
VulnerabilityCVE-2026-45726cvecve-2026-45726cwe-200cwe-522cwe-732
Published: 09/17/2026 (09/17/2026, 19:37:50 UTC)
Source: CVE Database V5
Vendor/Project: siderolabs
Product: omni

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.

CVSS v3.1

Score 7.6high

Attack Vector
Adjacent Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected software

siderolabs

omni

Affected versions
>=1.3.0 <1.6.6

Technical Details

Data Version
5.2
Assigner Short Name
GitHub_M
Date Reserved
2026-05-13T05:51:48.667Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6aac43c855bf5e2cf5cf210c

Added to database: 09/17/2026, 19:47:20 UTC

Last updated: 09/17/2026, 19:47:20 UTC

Views: 1

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