« Volver al listado

CVE-2026-106487

Estado: RecibidaBaja (3.5)—

Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalog cluster discovery may be affected when catalog contributors can create or modify kubernetes-cluster Resource entities. With the required endpoint permissions and pod RBAC, the backend can use its local in-cluster identity, potentially exposing Kubernetes resources readable by that identity. The credential is used only with the local in-cluster API endpoint and is not sent to the catalog-supplied endpoint. This issue is fixed in version 0.21.10.

CVSS

Probabilidad de explotación (EPSS)

FIRST aún no ha puntuado esta CVE (habitual en CVEs muy recientes o rechazadas).

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.

Vulnerabilidad en kubernetes-backend con acceso de red requerido (AV:N) y PR:L que permite exponer credenciales in-cluster (tokens/identidades Kubernetes) mediante manipulación de catalog entities, típico de SSRF/acceso a metadatos de identidad en entornos conteneurizados.

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

Privileged Account ManagementNetwork SegmentationVulnerability ScanningUser Account ManagementThreat Intelligence ProgramLimit Access to Resource Over Network

Tecnologías afectadas (1)

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

Backstage — Plugin Kubernetes BackendAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-106487",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 3.5,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "backstage",
          "product": "backstage",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.54.6"
            }
          ]
        },
        {
          "vendor": "@backstage",
          "product": "plugin-kubernetes-backend",
          "versions": [
            {
              "status": "affected",
              "version": "< 0.21.10"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-06T21:17:17.477",
  "references": [
    {
      "url": "https://github.com/backstage/backstage/commit/c14f8be6908f0f719b16356e5492352311e28946",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/backstage/backstage/releases/tag/v1.54.6",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/backstage/backstage/security/advisories/GHSA-h53x-hjx6-25gr",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-441"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalog cluster discovery may be affected when catalog contributors can create or modify kubernetes-cluster Resource entities. With the required endpoint permissions and pod RBAC, the backend can use its local in-cluster identity, potentially exposing Kubernetes resources readable by that identity. The credential is used only with the local in-cluster API endpoint and is not sent to the catalog-supplied endpoint. This issue is fixed in version 0.21.10."
    }
  ],
  "lastModified": "2026-10-06T21:17:17.477",
  "sourceIdentifier": "security-advisories@github.com"
}