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CVE-2026-45726

Estado: AplazadaAlta (7.6)—

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.

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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

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:A/PR:L/UI:R sugiere explotación con interacción en red adyacente. El impacto principal es exposición de secretos CA/claves privadas (T1552: credenciales en almacenamiento). Acceso no autorizado a recursos sensibles (T1005) y permisos incorrectos permiten lectura (T1222).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict File and Directory PermissionsPrivileged Account ManagementUpdate SoftwareActive Directory ConfigurationUser TrainingPassword Policies

Tecnologías afectadas (4)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Etcd — EtcdAIKubernetes — KubernetesAISiderolabs — OmniAITalos — TalosAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-45726",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45726",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-21T21:09:02.322777Z"
        }
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          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
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          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 6,
        "exploitabilityScore": 0.9
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      "affectedData": [
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          "versions": [
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  "published": "2026-09-17T20:16:49.650",
  "references": [
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      "url": "https://github.com/siderolabs/omni/security/advisories/GHSA-wv8c-6mx2-xf4j",
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  "vulnStatus": "Deferred",
  "weaknesses": [
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      "description": [
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          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-522"
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          "value": "CWE-732"
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  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "lastModified": "2026-09-24T21:25:27.050",
  "sourceIdentifier": "security-advisories@github.com"
}