{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "16.0.0"
              },
              {
                "fixed": "16.0.9"
              },
              {
                "introduced": "17.0.0"
              },
              {
                "fixed": "17.0.4"
              },
              {
                "introduced": "18.0.0"
              },
              {
                "fixed": "18.0.1"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "6781f9fc7652f735a75abd869ab3e79878fceec9"
            },
            {
              "fixed": "a02107dcb67fdeac7f5b39849a2206b4c20e3559"
            },
            {
              "introduced": "c937c8f1753b111086e28afa396f3abd5776b1db"
            },
            {
              "fixed": "db077774e6f893610419a96efc385e5d2cdf111d"
            },
            {
              "introduced": "fe6fdfe50de3d46e0ae18ce5b2f216855004df4f"
            },
            {
              "fixed": "f6bd5afd0370ae6308529047ba6344acf8d382a3"
            }
          ],
          "repo": "https://github.com/nextcloud/server",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "32"
          },
          {
            "last_affected": "32"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "fedoraproject:fedora"
      }
    ]
  },
  "details": "A missing access control check in Nextcloud Server \u003c 18.0.1, \u003c 17.0.4, and \u003c 16.0.9 causes hide-download shares to be downloadable when appending /download to the URL.",
  "id": "CVE-2020-8139",
  "modified": "2026-07-08T05:37:04.081158815Z",
  "published": "2020-03-20T21:15:17.640Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/"
    },
    {
      "type": "ADVISORY",
      "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-015"
    },
    {
      "type": "REPORT",
      "url": "https://hackerone.com/reports/788257"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}