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CVE-2026-106497

Estado: RecibidaMedia (4.3)—

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.

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.

CVE afecta Backstage con AV:N/PR:L/UI:N: acceso remoto requiriendo autenticación previa. Usuario autenticado explota evaluación inconsistente de permisos (CWE-863) para acceder datos restringidos. Impacto: exposición de información confidencial del catálogo (T1552.007) aprovechando credenciales váli

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 ManagementUser Account ManagementNetwork SegmentationActive Directory ConfigurationVulnerability ScanningUser Training

Tecnologías afectadas (1)

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

Backstage — Plugin Catalog BackendAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-106497",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "backstage",
          "product": "backstage",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.54.6"
            }
          ]
        },
        {
          "vendor": "@backstage",
          "product": "plugin-catalog-backend",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.9.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-06T22:17:04.560",
  "references": [
    {
      "url": "https://github.com/backstage/backstage/commit/21424faa2e280a6bc6b9e5c5245952f16aafca7b",
      "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-8429-xpcj-3cg5",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-178"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1."
    }
  ],
  "lastModified": "2026-10-06T22:17:04.560",
  "sourceIdentifier": "security-advisories@github.com"
}