Drupal core access bypass vulnerability
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/core | >= 7.0, < 7.56, >= 8.0, < 8.3.4 | 7.56, 8.3.4 |
| Composer package | drupal/drupal | >= 8.0, < 8.3.4, >= 7.0, < 7.56 | 8.3.4, 7.56 |
| Drupal (core) | drupal/core | >= 7.0, < 7.56, >= 8.0, < 8.3.4, >= 8.0, < 8.3.4, >= 7.0, < 7.56 | 7.56, 8.3.4 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-6922
- https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6922.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2017-6922.yaml
- https://github.com/drupal/core
- https://www.debian.org/security/2017/dsa-3897
- https://www.drupal.org/SA-CORE-2017-003
- https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
- http://www.securityfocus.com/bid/99219
- http://www.securitytracker.com/id/1038781
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-552- Platform
- Composer, Drupal
- Package
drupal/core, drupal/drupal- Disclosed
- 13.05.2022
- Updated
- 11.10.2026 11:18
Sources and licenses
OSV / GitHub Advisory Database - GHSA-58f3-cx8p-h8jg - CC BY 4.0
Vulnerability history: drupal/core
All published vulnerabilities of this package (Drupal (core)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 165
- First → latest
- 02.2018 09.2026
- Without a fix
- 3
- Exploited in attacks
- 5
Severity breakdown
- Critical 17
- High 44
- Medium 72
- Low 6
- Unrated 26
Disclosures per year
- 2018: 4
- 2019: 14
- 2020: 12
- 2021: 11
- 2022: 61
- 2023: 6
- 2024: 36
- 2025: 8
- 2026: 13
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Drupal core access bypass vulnerability this entry
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