The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 does not properly validate its integration key, treating an unset or blank key as valid, which allows unauthenticated attackers to create and download full site backups, including the database with user password hashes, and to delete arbitrary files on the server, leading to sensitive data disclosure and site takeover. The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 has been closed on WordPress.org since July 2024 and no fixed version is available. Remove it from any site where it is installed.
History

Thu, 01 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions backup Sheep
Vendors & Products Wordpress-extensions
Wordpress-extensions backup Sheep

Thu, 01 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-284

Thu, 01 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-73
Metrics cvssV3_1

{'score': 10.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 01 Oct 2026 08:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-284

Thu, 01 Oct 2026 06:15:00 +0000

Type Values Removed Values Added
Description The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 does not properly validate its integration key, treating an unset or blank key as valid, which allows unauthenticated attackers to create and download full site backups, including the database with user password hashes, and to delete arbitrary files on the server, leading to sensitive data disclosure and site takeover. The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 has been closed on WordPress.org since July 2024 and no fixed version is available. Remove it from any site where it is installed.
Title BackupSheep <= 1.8 - Unauthenticated Arbitrary File Deletion and Backup Exfiltration via Empty Integration Key
References

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2026-10-01T06:00:23.265Z

Updated: 2026-10-01T10:55:59.662Z

Reserved: 2026-09-28T08:14:28.260Z

Link: CVE-2026-101148

cve-icon Vulnrichment

Updated: 2026-10-01T10:44:36.518Z

cve-icon NVD

Status : Deferred

Published: 2026-10-01T06:17:04.057

Modified: 2026-10-01T13:11:52.923

Link: CVE-2026-101148

cve-icon Redhat

No data.