Improper access control in Drupal Core
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-284.
Summary
In Drupal versions 8.4.x versions before 8.4.5 when using node access controls with a multilingual site, Drupal marks the untranslated version of a node as the default fallback for access queries. This fallback is used for languages that do not yet have a translated version of the created node. This can result in an access bypass vulnerability. This issue is mitigated by the fact that it only applies to sites that a) use the Content Translation module; and b) use a node access module such as Domain Access which implement hook_node_access_records().
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 | 8.4.x versions before 8.4.5 | — | No fix listed | CNA |
| — | drupal/core (Packagist) | 8.4.0 to before 8.4.5 | 8.4.5 | Patch available | GHSA-3327-jr93-7hq3 |
| — | drupal/drupal (Packagist) | 8.4.0 to before 8.4.5 | 8.4.5 | Patch available | GHSA-3327-jr93-7hq3 |
- Drupal Core VendorDrupal Affected 8.4.x versions before 8.4.5 Fixed in — No fix listed CNA
- drupal/core (Packagist) Vendor— Affected 8.4.0 to before 8.4.5 Fixed in 8.4.5 Patch available GHSA-3327-jr93-7hq3
- drupal/drupal (Packagist) Vendor— Affected 8.4.0 to before 8.4.5 Fixed in 8.4.5 Patch available GHSA-3327-jr93-7hq3
Remediation
- Fix · GHSA-3327-jr93-7hq3 drupal/core (Packagist) Fixed in 8.4.5 Advisory →
- Fix · GHSA-3327-jr93-7hq3 drupal/drupal (Packagist) Fixed in 8.4.5 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-6930
- 2026-10-03 Alias added: GHSA-3327-jr93-7hq3
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-2017-6930 · CVE Program
- CVE-2017-6930 · NVD
- FIRST EPSS
- GHSA-3327-jr93-7hq3 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-6930 · 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