Bei Fen – WordPress Backup Plugin <= 1.4.2 - Authenticated (Subscriber+) Local File Inclusion
Strategic Overview
- Status
- Unpatched
- Affected Plugin
- Bei Fen – WordPress Backup Plugin
- Affected Version
<= 1.4.2- CVSS
- 8.1High
- Weakness type
- CWE-98 · Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
- CVE
CVE-2025-9993
At a glance
CVE-2025-9993 is a high-severity Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in the Bei Fen WordPress plugin, affecting versions <= 1.4.2. It carries a CVSS score of 8.1 (reachable over the network; high confidentiality, integrity, availability impact). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed September 2025, reported by Aril Aprilio (forsak3n).
Vulnerability Overview
The Bei Fen – WordPress Backup Plugin plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 1.4.2 via the 'task'. This makes it possible for authenticated attackers, with Subscriber-level access and above, to include and execute arbitrary .php files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where .php file types can be uploaded and included. This only affects instances running PHP 7.1 or older.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
Bei Fen <= 1.4.2 carries this weakness at task, and reaching it takes an account at Subscriber level or above. PHP file inclusion means a path used by include or require is built from request data, so the file that gets executed is under the caller's influence.
Including an attacker-influenced file executes its contents, which is why this class is routinely chained with an upload or log-poisoning step to reach code execution. No fixed build of this plugin is recorded for Bei Fen yet, so installs running <= 1.4.2 stay exposed until the vendor ships one.
Remediation
No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
How does WordSec protect against this?
An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.
- Firewall
- Scanner
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C