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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Drupal.org | Drupal Core | Drupal 7.x versions before 7.57 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | drupal7 | 7.52-2+deb9u2 | DSA-4123-1 |
| Debian 8 | drupal7 | 7.32-1+deb8u10 | DSA-4123-1 |
| Debian 7 | drupal7 | 7.14-2+deb7u17 | DLA-1295-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | drupal7 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | drupal7 | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | drupal/core | >= 7.0, < 7.57 | 7.57 | GHSA-66mv-q8r2-hj8w |
| Packagist | drupal/drupal | >= 7.0, < 7.57 | 7.57 | GHSA-66mv-q8r2-hj8w |
Advisories 2
- DSA-4123-1 drupal7 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1295-1 drupal7 - security update Debian Security (DSA / DLA) · Mar 9, 2026