CVE-2023-4140 MEDIUM

CVE-2023-4140: WP Ultimate CSV Importer <= 7.9.8 - Arbitrary Usermeta Update to Authenticated (Author+) Privilege Escalation

Vendor Smackcoders
Product WP Ultimate CSV Importer – Import CSV, XML & Excel into WordPress
Weakness CWE-269
Published August 4, 2023
Last update April 8, 2026

CVSS base score

6.6/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

The WP Ultimate CSV Importer plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 7.9.8 due to insufficient restriction on the 'get_header_values' function. This makes it possible for authenticated attackers, with minimal permissions such as an author, if the administrator previously grants access in the plugin settings, to modify their user role by supplying the 'wp_capabilities->cus1' parameter.

Key dates

02Disclosure timeline

August 4, 2023 CVE published
April 8, 2026 Record updated

Related vulnerabilities

04Related CVE