GHSA-v64r-7wg9-23pr
Unauthenticated Craft CMS users can trigger a database backup
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | craftcms/cms | >= 5.0.0-RC1, < 5.8.21 | 5.8.21 |
| Packagist | craftcms/cms | >= 3.0.0, < 4.16.17 | 4.16.17 |
Details
As written in the advisory (Markdown source, shown as plain text).
Unauthenticated users can trigger database backup operations the `updater/backup` action, potentially leading to resource exhaustion or information disclosure.
Users should update to the patched versions (5.8.21 and 4.16.17) to mitigate the issue.
Craft 3 users should update to the latest Craft 4 and 5 releases, which include the fixes.
References:
https://github.com/craftcms/cms/commit/f83d4e0c6b906743206b4747db4abf8164b8da39
https://github.com/craftcms/cms/blob/5.x/CHANGELOG.md#5821---2025-12-04
## Affected Endpoints
- `POST /admin/actions/updater/backup` (unauthenticated)
## Vulnerability Details
### Root Cause
All `updater/*` actions are explicitly configured with anonymous access:
```php
// BaseUpdaterController.php
protected array|bool|int $allowAnonymous = self::ALLOW_ANONYMOUS_LIVE | self::ALLOW_ANONYMOUS_OFFLINE;
```
### Attack Vector
1. Send unauthenticated POST request to `/admin/actions/updater/backup`
2. Database backup executes with configured `backupCommand`
References
External links from the advisory. They lead to third-party sites.
- https://github.com/craftcms/cms/security/advisories/GHSA-v64r-7wg9-23pr
- https://nvd.nist.gov/vuln/detail/CVE-2025-68456
- https://github.com/craftcms/cms/commit/f83d4e0c6b906743206b4747db4abf8164b8da39
- https://github.com/craftcms/cms
- https://github.com/craftcms/cms/blob/5.x/CHANGELOG.md#5821---2025-12-04