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CVE-2026-45264

Estado: AplazadaMedia (4.3)—

Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a team folder can rename files in the team folder. This issue has been patched in versions 17.0.15, 18.1.12, 19.1.16, 20.1.11, and 21.0.4.

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).

Tecnologías afectadas (1)

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

Nextcloud — NextcloudAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-45264",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45264",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-01T17:47:35.907468Z"
        }
      }
    ],
    "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:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "nextcloud",
          "product": "security-advisories",
          "versions": [
            {
              "status": "affected",
              "version": ">= 17.0.0, < 17.0.15"
            },
            {
              "status": "affected",
              "version": ">= 18.0.0, < 18.1.12"
            },
            {
              "status": "affected",
              "version": ">= 19.0.0, < 19.1.16"
            },
            {
              "status": "affected",
              "version": ">= 20.0.0, < 20.1.11"
            },
            {
              "status": "affected",
              "version": ">= 21.0.0, < 21.0.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-06-01T17:17:09.690",
  "references": [
    {
      "url": "https://github.com/nextcloud/groupfolders/pull/4361",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wx2x-822r-rvmf",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://hackerone.com/reports/3540673",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a team folder can rename files in the team folder. This issue has been patched in versions 17.0.15, 18.1.12, 19.1.16, 20.1.11, and 21.0.4."
    },
    {
      "lang": "es",
      "value": "Nextcloud es una plataforma de colaboración de contenido de código abierto. Desde las versiones 17.0.0 hasta antes de la 17.0.15, de la 18.0.0 hasta antes de la 18.1.12, de la 19.0.0 hasta antes de la 19.1.16, de la 20.0.0 hasta antes de la 20.1.11, y de la 21.0.0 hasta antes de la 21.0.4, un usuario con permiso de LECTURA y CREACIÓN, pero sin permiso de ACTUALIZACIÓN para una carpeta de equipo, puede renombrar archivos en dicha carpeta de equipo. Este problema ha sido parcheado en las versiones 17.0.15, 18.1.12, 19.1.16, 20.1.11 y 21.0.4."
    }
  ],
  "lastModified": "2026-07-22T07:10:00.107",
  "sourceIdentifier": "security-advisories@github.com"
}