{"id":"CVE-2020-8139","aliases":["EUVD-2020-29036","GHSA-3j4p-7g9x-w28j"],"status":"published","title":"A missing access control check in Nextcloud Server \u003c 18.0.1, \u003c 17.0.4, and \u003c 16.0.9 causes hide...","description":"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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01536,"percentile":0.75183,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284","CWE-862"],"published":"2020-03-20T20:14:30Z","modified":"2026-10-24T10:30:50Z","products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"hackerone","product":"nextcloud server"},{"vendor":"nextcloud","product":"nextcloud_server"}],"references":[{"url":"https://hackerone.com/reports/788257","tags":["x_refsource_MISC","x_transferred","Permissions Required","report"]},{"url":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-015","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8139"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/"},{"url":"https://github.com/advisories/GHSA-3j4p-7g9x-w28j"}],"sources":{"cve":[{"id":"CVE-2020-8139","description":"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.","status":"published","published":"2020-03-20T20:14:30Z","modified":"2024-08-04T09:48:25.736Z","cwes":["CWE-284"],"updated_at":"2026-11-02T14:35:50.545879Z"}],"euvd":[{"id":"EUVD-2020-29036","description":"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.","status":"published","published":"2020-03-20T20:14:30Z","modified":"2024-08-04T09:48:25Z","updated_at":"2026-11-03T03:07:58.055641Z"}],"ghsa":[{"id":"GHSA-3j4p-7g9x-w28j","title":"A missing access control check in Nextcloud Server \u003c 18.0.1, \u003c 17.0.4, and \u003c 16.0.9 causes hide...","description":"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.","status":"published","published":"2022-05-24T17:12:06Z","modified":"2023-01-29T05:01:55Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:44:56.825456Z"}],"nvd":[{"id":"CVE-2020-8139","description":"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.","status":"published","published":"2020-03-20T21:15:17.64Z","modified":"2026-06-17T03:25:55.69Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-284","CWE-862"],"updated_at":"2026-11-02T14:05:56.580228Z"}],"osv":[{"id":"CVE-2020-8139","description":"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.","status":"published","published":"2020-03-20T21:15:17.64Z","modified":"2026-10-24T10:30:50.839455583Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:17.663289Z"}]}}