Files uploaded by anonymous users into a private file system can be accessed by other anonymous users
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-552.
Summary
In Drupal core 8.x prior to 8.3.4 and Drupal core 7.x prior to 7.56; Private files that have been uploaded by an anonymous user but not permanently attached to content on the site should only be visible to the anonymous user that uploaded them, rather than all anonymous users. Drupal core did not previously provide this protection, allowing an access bypass vulnerability to occur. This issue is mitigated by the fact that in order to be affected, the site must allow anonymous users to upload files into a private file system.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Drupal | Drupal Core | Drupal 8 to before 8.3.3; Drupal 7 to before 7.55 | 8.3.3, 7.55 | Patch available | CNA |
| — | drupal/core (Packagist) | 7.0 to before 7.56 | 7.56 | Patch available | GHSA-58f3-cx8p-h8jg |
| — | drupal/core (Packagist) | 8.0 to before 8.3.4 | 8.3.4 | Patch available | GHSA-58f3-cx8p-h8jg |
| — | drupal/drupal (Packagist) | 8.0 to before 8.3.4 | 8.3.4 | Patch available | GHSA-58f3-cx8p-h8jg |
| — | drupal/drupal (Packagist) | 7.0 to before 7.56 | 7.56 | Patch available | GHSA-58f3-cx8p-h8jg |
- Drupal Core VendorDrupal Affected Drupal 8 to before 8.3.3; Drupal 7 to before 7.55 Fixed in 8.3.3, 7.55 Patch available CNA
- drupal/core (Packagist) Vendor— Affected 7.0 to before 7.56 Fixed in 7.56 Patch available GHSA-58f3-cx8p-h8jg
- drupal/core (Packagist) Vendor— Affected 8.0 to before 8.3.4 Fixed in 8.3.4 Patch available GHSA-58f3-cx8p-h8jg
- drupal/drupal (Packagist) Vendor— Affected 8.0 to before 8.3.4 Fixed in 8.3.4 Patch available GHSA-58f3-cx8p-h8jg
- drupal/drupal (Packagist) Vendor— Affected 7.0 to before 7.56 Fixed in 7.56 Patch available GHSA-58f3-cx8p-h8jg
Remediation
- Fix · CNA Drupal Core (Drupal) Fixed in 8.3.3, 7.55
- Fix · GHSA-58f3-cx8p-h8jg drupal/core (Packagist) Fixed in 7.56 Advisory →
- Fix · GHSA-58f3-cx8p-h8jg drupal/core (Packagist) Fixed in 8.3.4 Advisory →
- Fix · GHSA-58f3-cx8p-h8jg drupal/drupal (Packagist) Fixed in 8.3.4 Advisory →
- Fix · GHSA-58f3-cx8p-h8jg drupal/drupal (Packagist) Fixed in 7.56 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-6922
- 2026-10-03 Alias added: GHSA-58f3-cx8p-h8jg
References
More Drupal vulnerabilities
- TI-2026-07979 Drupal core - Highly critical - SQL injection - SA-CORE-2026-004 KEVCVSS 3.1CRITICAL 9.8
- TI-2018-05494 Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004 KEVCVSS 3.1CRITICAL 9.8
- TI-2018-05493 Improper input validation in Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-10731 Unrestricted file upload in Drupal Core KEVCVSS 3.1HIGH 8.8
- TI-2019-04505 Drupal core - Highly critical - Remote Code Execution KEVCVSS 3.1HIGH 8.1
- TI-2020-17477 Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks… KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2017-6922 · CVE Program
- CVE-2017-6922 · NVD
- FIRST EPSS
- GHSA-58f3-cx8p-h8jg · GitHub Advisory Database · CC BY 4.0
- CVE-2017-6922 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences