WP Import Plugin up to 7.33.1 on WordPress CSV Import SingleImportExport.php import_single_post_as_csv deserialization

Summaryinfo

A vulnerability has been found in WP Import Plugin up to 7.33.1 on WordPress and classified as problematic. Affected is the function import_single_post_as_csv of the file SingleImportExport.php of the component CSV Import. This manipulation causes deserialization. This vulnerability is handled as CVE-2025-13145. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in WP Import Plugin up to 7.33.1 on WordPress. It has been declared as problematic. Affected by this vulnerability is the function import_single_post_as_csv of the file SingleImportExport.php of the component CSV Import. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wordfence.com. This vulnerability is known as CVE-2025-13145. The exploitation appears to be easy. The attack can be launched remotely. The exploitation needs additional levels of successful authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/19/2025).

By approaching the search of inurl:SingleImportExport.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-198102). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• WP Import Plugin

Version

• 7.33.0
• 7.33.1

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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