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Vulnerability record · CVE-2025-13145 · published 19 November 2025

CVE-2025-13145: Deserialization of untrusted data vulnerability

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.

7.2 CVSS 3.1 High EPSS 0.51% · top 58.6% CWE-502 · Deserialization of untrusted data Deferred
7.2CVSS 3.1 base score
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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

References

LinkTags
https://plugins.trac.wordpress.org/browser/wp-ultimate-csv-importer/trunk/SingleImportExport.php#L116
https://plugins.trac.wordpress.org/changeset/3397842/wp-ultimate-csv-importer/trunk/SingleImportExport.php
https://www.wordfence.com/threat-intel/vulnerabilities/id/5e441699-4c78-4277-8ac1-f33b810e78cb?source=cve

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Source: NIST National Vulnerability Database (record CVE-2025-13145), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.