Description

The Bears Backup plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.0.0. This is due to the bbackup_ajax_handle() function not having a capability check, nor validating user supplied input passed directly to call_user_func(). This makes it possible for unauthenticated attackers to execute code on the server which can be leverage to inject backdoors or create new administrative user accounts to name a few things. On WordPress sites running the Alone theme versions 7.8.4 and older, this can be chained with CVE-2025-5394 to install the Bears Backup plugin and achieve the same impact.

Classification

CVE ID: CVE-2025-5396

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

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

Affected Products

Vendor: Bearsthemes

Product: Bears Backup

References

https://nvd.nist.gov/vuln/detail/CVE-2025-5396
https://www.wordfence.com/threat-intel/vulnerabilities/id/81b44abb-6d30-4930-b68b-9a04d93f5169?source=cve
https://themeforest.net/item/alone-charity-multipurpose-nonprofit-wordpress-theme/15019939

Timeline