CVE-2026-63298

{
  "id": "CVE-2026-63298",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-12T20:17:47.713",
  "lastModified": "2026-10-24T16:10:00.153",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An improper neutralization of special elements vulnerability in LXD's NVIDIA instance configuration handling allows an authenticated attacker to inject arbitrary configuration directives. By supplying newline characters within the 'nvidia.driver.capabilities' or 'nvidia.require.*' configuration values, an attacker can manipulate the generated lxc.conf file. This flaw enables the attacker to execute arbitrary code on the host system with the privileges of the LXD daemon."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de neutralización inadecuada de elementos especiales en el manejo de la configuración de instancias NVIDIA de LXD permite a un atacante autenticado inyectar directivas de configuración arbitrarias. Al proporcionar caracteres de nueva línea dentro de los valores de configuración ’nvidia.driver.capabilities’ o ’nvidia.require.*’, un atacante puede manipular el archivo lxc.conf generado. Esta falla permite al atacante ejecutar código arbitrario en el sistema anfitrión con los privilegios del demonio LXD."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Canonical",
          "product": "LXD",
          "defaultStatus": "unaffected",
          "packageName": "LXD",
          "platforms": [
            "Linux"
          ],
          "repo": "https://github.com/canonical/lxd",
          "versions": [
            {
              "version": "5.0.0",
              "lessThan": "5.0.8",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "5.21.0",
              "lessThan": "5.21.6",
              "versionType": "semver",
              "status": "affected"
            },
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              "lessThan": "4.0.12",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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      {
        "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": [
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        "ssvcData": {
          "timestamp": "2026-08-13T14:33:35.469940Z",
          "id": "CVE-2026-63298",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
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  "references": [
    {
      "url": "https://github.com/canonical/lxd/security/advisories/GHSA-vfh7-q59q-54v2",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory",
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}