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Vulnerability record · CVE-2023-6266 · published 11 January 2024

CVE-2023-6266: Backupbliss backup migration information exposure vulnerability

Backupbliss · Backup Migration

The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and file validation on the BMI_BACKUP case of the handle_downloading function in all versions up to, and including, 1.3.6. This makes it possible for unauthenticated attackers to download back-up files which can contain sensitive information such as user passwords, PII, database credentials, and much more.

7.5 CVSS 3.1 High EPSS 2.1% · top 19.5% CWE-200 · Information exposureCWE-552 · CWE-552
7.5CVSS 3.1 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and file validation on the BMI_BACKUP case of the handle_downloading function in all versions up to, and including, 1.3.6. This makes it possible for unauthenticated attackers to download back-up files which can contain sensitive information such as user passwords, PII, database credentials, and much more.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.5/includes/initializer.php#L1048 Issue Tracking
https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.5/includes/initializer.php#L972 Issue Tracking
https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/initializer.php#L1065 Issue Tracking
https://www.wordfence.com/threat-intel/vulnerabilities/id/08801f53-3c57-41a3-a637-4b52637cc612?source=cve Third Party Advisory
https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.5/includes/initializer.php#L1048 Issue Tracking
https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.5/includes/initializer.php#L972 Issue Tracking
https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/initializer.php#L1065 Issue Tracking
https://www.wordfence.com/threat-intel/vulnerabilities/id/08801f53-3c57-41a3-a637-4b52637cc612?source=cve Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-6971Backupbliss backup migration inclusion from untrusted sphere vulnerabilityThe Backup Migration plugin for WordPress is vulnerable to Remote File Inclusion in versions 1.0.8 to 1.3.9 via the 'content-dir' HTTP header. This m…EPSS 6.4%9.8CVE-2023-6972Backupbliss backup migration path traversal vulnerabilityThe Backup Migration plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.3.9 via the 'content-backups' and '…EPSS 1.4%9.8CVE-2023-6553Backup Migration WordPress plugin unauthenticated remote code executionThe Backup Migration plugin for WordPress, in versions up to and including 1.3.7, passes attacker-controlled values into an include in /includes/back…EPSS 98%analysed7.5CVE-2023-6271Backupbliss backup migration vulnerabilityThe Backup Migration WordPress plugin before 1.3.6 stores in-progress backups information in easy to find, publicly-accessible files, which may allow…EPSS 0.69%7.2CVE-2023-7002Backupbliss backup migration os command injection vulnerabilityThe Backup Migration plugin for WordPress is vulnerable to OS Command Injection in all versions up to, and including, 1.3.9 via the 'url' parameter. …EPSS 31%6.5CVE-2023-0958Backupbliss backup migration missing authorization vulnerabilitySeveral plugins for WordPress by Inisev are vulnerable to unauthorized installation of plugins due to a missing capability check on the handle_instal…EPSS 0.69%5.4CVE-2021-36884Backupbliss backup migration cross-site scripting vulnerabilityAuthenticated Persistent Cross-Site Scripting (XSS) vulnerability discovered in WordPress Backup Migration plugin <= 1.1.5 versions.EPSS 0.57%4.3CVE-2023-3977Backupbliss backup migration cross-site request forgery vulnerabilitySeveral plugins for WordPress by Inisev are vulnerable to Cross-Site Request Forgery to unauthorized installation of plugins due to a missing nonce c…EPSS 0.61%

Source: NIST National Vulnerability Database (record CVE-2023-6266), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.