Servers and applications
CVE-2017-6928
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…
- Severity
- Medium 5.3
- Published
- 1 Mar 2018
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 7.57
- Exploit chance
- 1% in the next 30 daysHigher than 63% of CVEs. EPSS by FIRST, 11 Nov 2026
- Attack
- Over the network · Only under certain conditions · Needs a user account · No user action needed
- Attacker can
- Read data
- CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N- Sources
- NVD
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.
Affected software
| Software | Affected versions |
|---|---|
DrupalServers and applications · cpe:a:drupal:drupal |
|