WP Import – Ultimate CSV XML Importer for WordPress <= 7.33.1 - Authenticated (Administrator+) PHP Object Injection via CSV Import

Deserialization of Untrusted Data
CVE CVE-2025-13145
CVSS High (7.2)
Publicly Published November 18, 2025
Last Updated November 19, 2025
Researcher Dieu Link, GCSC Vietnam
Description

The WP Import – Ultimate CSV XML Importer for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 7.33.1. This is due to deserialization of untrusted data supplied via CSV file imports in the import_single_post_as_csv function within SingleImportExport.php. This makes it possible for authenticated attackers, with administrator-level access or higher, to inject a PHP object. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

References

1 affected software package

Software Type Plugin
Software Slug wp-ultimate-csv-importer (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 7.33.1
Patched Version
  • 7.34
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