CVE-2017-6928

Name: CVE-2017-6928
Creator: NVD / NIST
Published: 2018-03-01T23:29:00.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.06%

Last modified Jun 17, 2026

CVE-2017-6928 is a vulnerability of currently unknown severity. 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. EPSS estimates a 1.06% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.06%

60.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Drupal	Drupal	>= 7.0, < 7.57
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

https://lists.debian.org/debian-lts-announce/2018/02/msg00030.htmlThird Party Advisory
https://www.debian.org/security/2018/dsa-4123Issue Tracking
https://www.drupal.org/sa-core-2018-001Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00030.htmlThird Party Advisory
https://www.debian.org/security/2018/dsa-4123Issue Tracking
https://www.drupal.org/sa-core-2018-001Vendor Advisory

Timeline

Published: Mar 1, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6928?

How severe is CVE-2017-6928?

Severity scoring for CVE-2017-6928 is pending analysis. The EPSS model estimates a 1.06% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6928?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-6928?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST