CVE-2025-10057

WP Import – Ultimate CSV XML Importer for WordPress 7.20 - 7.28 - Authenticated (Subscriber+) Remote Code Execution via Code Injection

2025-09-16 17:10
Arkadiusz Hydzik

Strategic Overview

Status
Patched in 7.29
Affected Plugin
WP Ultimate CSV Importer – WordPress CSV, XML & Excel Import
Affected Version
7.20 – 7.28
CVSS
8.8High
Weakness type
CWE-94 · Improper Control of Generation of Code ('Code Injection')
CVE
CVE-2025-10057
View all WP Ultimate CSV Importer – WordPress CSV, XML & Excel Import vulnerabilities

At a glance

CVE-2025-10057 is a high-severity Improper Control of Generation of Code ('Code Injection') vulnerability in the WP Ultimate CSV Importer WordPress plugin, affecting versions 7.20 – 7.28. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 7.29; sites on affected versions should update now. Disclosed September 2025, reported by Arkadiusz Hydzik.

Vulnerability Overview

The WP Import – Ultimate CSV XML Importer for WordPress plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 7.28. This is due to the write_to_customfile() function writing unfiltered PHP code to a file. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject the customFunction.php file with PHP code that can be accessed to trigger remote code execution.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-94: Improper Control of Generation of Code ('Code Injection')

WP Ultimate CSV Importer 7.20 – 7.28 carries this weakness at write_to_customfile(), and reaching it takes an account at Subscriber level or above. Code injection means input from a request reaches a language construct that evaluates code, so the attacker's text is executed rather than treated as data.

The injected code runs with the web server's privileges, giving the attacker the same access to the database and filesystem as WordPress itself. For WP Ultimate CSV Importer the fix is 7.29: builds 7.20 – 7.28 are affected, anything from 7.29 onward is not.

Remediation

Update to version 7.29, or a newer patched version

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. None of that substitutes for the fix: WP Ultimate CSV Importer 7.29 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-10057https://www.wordfence.com/threat-intel/vulnerabilities/id/925af22b-a728-496e-a63a-5966347ebe6chttps://nvd.nist.gov/vuln/detail/CVE-2025-10057

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C