{"id":"CVE-2017-6928","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-6928","generatedAt":"2026-10-28T21:52:44.132Z","title":"Drupal core 7.x versions before 7.57 when using Drupal's private file system, Drupal will check to make sure a user has access to a file before allowing the user to view or download it.","description":"Drupal core 7.x versions before 7.57 when using Drupal's private file system, Drupal will check to make sure a user has access to a file before allowing the user to view or download it. This check fails under certain conditions in which one module is trying to grant access to the file and another is trying to deny it, leading to an access bypass vulnerability. This vulnerability is mitigated by the fact that it only occurs for unusual site configurations.","published":"2018-03-01T23:29:00.000Z","lastModified":"2026-06-17T01:23:21.000Z","status":"Modified","sourceIdentifier":"mlhess@drupal.org","cvss":{"version":"3.0","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-732"],"affected":["drupal/drupal","debian/debian linux"],"epss":{"score":0.0102,"percentile":0.63236,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.02%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://lists.debian.org/debian-lts-announce/2018/02/msg00030.html","tags":["Third Party Advisory"],"source":"mlhess@drupal.org"},{"url":"https://www.debian.org/security/2018/dsa-4123","tags":["Issue Tracking"],"source":"mlhess@drupal.org"},{"url":"https://www.drupal.org/sa-core-2018-001","tags":["Vendor Advisory"],"source":"mlhess@drupal.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/02/msg00030.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4123","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.drupal.org/sa-core-2018-001","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-6928","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}