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GHSA-V64R-7WG9-23PR

Vulnerability from github – Published: 2026-01-05 18:49 – Updated: 2026-01-09 03:11
VLAI
Summary
Unauthenticated Craft CMS users can trigger a database backup
Details

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
Severity
7.0 (High)
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
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.8.20"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "craftcms/cms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0-RC1"
            },
            {
              "fixed": "5.8.21"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.16.16"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "craftcms/cms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "4.16.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-68456"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-202",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-05T18:49:56Z",
    "nvd_published_at": "2026-01-05T22:15:52Z",
    "severity": "HIGH"
  },
  "details": "Unauthenticated users can trigger database backup operations the `updater/backup` action, potentially leading to resource exhaustion or information disclosure.\n\nUsers should update to the patched versions (5.8.21 and 4.16.17) to mitigate the issue.\n\nCraft 3 users should update to the latest Craft 4 and 5 releases, which include the fixes.\n\nReferences:\n\nhttps://github.com/craftcms/cms/commit/f83d4e0c6b906743206b4747db4abf8164b8da39\n\nhttps://github.com/craftcms/cms/blob/5.x/CHANGELOG.md#5821---2025-12-04\n\n## Affected Endpoints\n\n- `POST /admin/actions/updater/backup` (unauthenticated)\n\n## Vulnerability Details\n\n### Root Cause\nAll `updater/*` actions are explicitly configured with anonymous access:\n\n```php\n// BaseUpdaterController.php  \nprotected array|bool|int $allowAnonymous = self::ALLOW_ANONYMOUS_LIVE | self::ALLOW_ANONYMOUS_OFFLINE;\n```\n\n### Attack Vector\n1. Send unauthenticated POST request to `/admin/actions/updater/backup`\n2. Database backup executes with configured `backupCommand`",
  "id": "GHSA-v64r-7wg9-23pr",
  "modified": "2026-01-09T03:11:23Z",
  "published": "2026-01-05T18:49:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/security/advisories/GHSA-v64r-7wg9-23pr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68456"
    },
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/commit/f83d4e0c6b906743206b4747db4abf8164b8da39"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/craftcms/cms"
    },
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/blob/5.x/CHANGELOG.md#5821---2025-12-04"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Unauthenticated Craft CMS users can trigger a database backup"
}



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