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CVE-2026-86335

Estado: AplazadaMedia (6.3)—

Missing Authorization in imageDownload in Canonical LXD before 5.0.10, 5.21.8, and 6.10 on Linux allows a project-restricted client to access private images from other projects via local fingerprint reuse during image or instance import requests.

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.

Explotación de servicio remoto LXD sin privilegios suficientes (PR:L) mediante reutilización de fingerprint para acceder a imágenes privadas de otros proyectos. CWE-862 (falta de autorización) confirma bypass de control de acceso.

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 ManagementApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser TrainingUser Account Management

Tecnologías afectadas (1)

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

Canonical — LXDAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-86335",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-86335",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-28T13:49:04.323716Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@ubuntu.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@ubuntu.com",
      "affectedData": [
        {
          "repo": "https://github.com/canonical/lxd",
          "vendor": "Canonical",
          "product": "LXD",
          "versions": [
            {
              "status": "affected",
              "version": "5.21.0",
              "lessThan": "5.21.8",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.0",
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              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.0",
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          ],
          "packageName": "LXD",
          "defaultStatus": "unaffected"
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  ],
  "published": "2026-09-28T14:17:20.740",
  "references": [
    {
      "url": "https://github.com/canonical/lxd/pull/18987",
      "source": "security@ubuntu.com"
    },
    {
      "url": "https://github.com/canonical/lxd/pull/19001",
      "source": "security@ubuntu.com"
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    {
      "url": "https://github.com/canonical/lxd/pull/19002",
      "source": "security@ubuntu.com"
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    {
      "url": "https://github.com/canonical/lxd/pull/19003",
      "source": "security@ubuntu.com"
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      "url": "https://github.com/canonical/lxd/security/advisories/GHSA-j7p3-5g2v-69j8",
      "source": "security@ubuntu.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@ubuntu.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Missing Authorization in imageDownload in Canonical LXD before 5.0.10, 5.21.8, and 6.10 on Linux allows a project-restricted client to access private images from other projects via local fingerprint reuse during image or instance import requests."
    }
  ],
  "lastModified": "2026-09-28T17:17:51.407",
  "sourceIdentifier": "security@ubuntu.com"
}