CVE-2026-47724

{
  "id": "CVE-2026-47724",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-23T21:17:04.477",
  "lastModified": "2026-10-24T13:10:00.147",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.4, the `/api/v1/*` route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at `internal/api/hosts.go:384`: \"API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer.\" The Web UI gates state-changing routes through `loadAccessibleCA` (`internal/web/cas.go`); CA-management endpoints in `internal/api/cas.go` ALSO have proper `canAccessCA` gates. The gap is on the host, network, firewall, mobile-bundle, and most operator endpoints. Combined with the per-operator CA model from ADR 0002, this gives any non-admin operator API key broad cross-tenant access — instant privilege escalation in the worst case. Version 0.3.4 fixes the issue."
    },
    {
      "lang": "es",
      "value": "nebula-mesh es un plano de control autohospedado para la red privada virtual de malla Slack Nebula. Antes de la versión 0.3.4, la superficie de ruta ’/api/v1/*’ confía únicamente en el token de portador para la autorización en la mayoría de los puntos finales. El propio código fuente admite esto en “internal/api/hosts.go:384”: ’La API confía en el token de portador para la autorización; la propiedad por CA se aplica solo en la capa web.’ La interfaz de usuario web protege las rutas que cambian de estado a través de “loadAccessibleCA” (“internal/web/cas.go”); los puntos finales de gestión de CA en “internal/api/cas.go” TAMBIÉN tienen puertas “canAccessCA” adecuadas. La brecha está en los puntos finales de host, red, cortafuegos, paquete móvil y la mayoría de los operadores. Combinado con el modelo de CA por operador de ADR 0002, esto otorga a cualquier clave API de operador no administrador un amplio acceso entre inquilinos - escalada de privilegios instantánea en el peor de los casos. La versión 0.3.4 soluciona el problema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "juev",
          "product": "nebula-mesh",
          "versions": [
            {
              "version": "< 0.3.4",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-28T14:29:11.247252Z",
          "id": "CVE-2026-47724",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/forgekeep/nebula-mesh/commit/9d8bcd7667ecd0c2975cc71fb35a02fe131f76f2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-598g-h2vc-h5vg",
      "source": "[email protected]"
    }
  ]
}