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craftcms/cms · Security

Unauthenticated Craft CMS users can trigger a database backup

GHSA ID
GHSA-v64r-7wg9-23pr
CVE ID
CVE-2025-68456
Severity
high
Published
Updated
CVSS v4
7 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

Description

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:

// 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

CWEs

  • CWE-202 · Exposure of Sensitive Information Through Data Queries
  • CWE-770 · Allocation of Resources Without Limits or Throttling

References

Open GitHub