CVE-2026-13353
Received Received - Intake

Remote Code Execution in WP Ultimate CSV Importer Plugin

Publication date: 2026-07-11

Last updated on: 2026-07-11

Assigner: Wordfence

Description
The WP Ultimate CSV Importer – WordPress Import & Export for CSV, XML & Excel plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 8.0.1 via the 'MappedFields' parameter. This is due to missing capability checks on the AJAX handlers for install_addon, saveMappedFields, and StartImport, combined with the plugin nonce being exposed to any authenticated user who can load an admin page, allowing a Subscriber to install the Import WooCommerce add-on, persist attacker-controlled PHP expressions in the MappedFields parameter, and trigger evaluation via eval() in ImportHelpers::get_meta_values(). This makes it possible for authenticated attackers, with subscriber-level access and above, to execute code on the server.

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Meta Information

Published
2026-07-11
Last Modified
2026-07-11
Generated
2026-07-11
AI Q&A
2026-07-11
EPSS Evaluated
N/A
NVD
CVE-2026-13353
EUVD
EUVD-2026-43129

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wp_ultimate_csv_importer wp_ultimate_csv_importer to 8.0.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

The WP Ultimate CSV Importer plugin for WordPress, up to version 8.0.1, has a Remote Code Execution vulnerability via the 'MappedFields' parameter.

This happens because the plugin lacks proper capability checks on certain AJAX handlers (install_addon, saveMappedFields, and StartImport) and exposes a plugin nonce to any authenticated user who can access an admin page.

As a result, even users with subscriber-level access can install add-ons, inject attacker-controlled PHP code into the MappedFields parameter, and trigger its execution through the eval() function in ImportHelpers::get_meta_values(), allowing them to execute arbitrary code on the server.

Impact Analysis

This vulnerability allows authenticated users with low-level access (subscriber or higher) to execute arbitrary code on the server hosting the WordPress site.

Such remote code execution can lead to full compromise of the website, including unauthorized data access, modification, deletion, installation of malware, or use of the server for malicious purposes.

The CVSS score of 8.8 indicates a high severity impact on confidentiality, integrity, and availability.

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