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

Improper Privilege Management
CVE CVE-2023-4140
CVSS 6.6 (Medium)
Publicly Published August 3, 2023
Last Updated August 4, 2023
Researcher István Márton - Wordfence


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.



1 affected software package

Software Type Plugin
Software Slug wp-ultimate-csv-importer (view on wordpress.org)
Patched? Yes
Remediation Update to version 7.9.9, or a newer patched version
Affected Version
  • <= 7.9.8
Patched Version
  • 7.9.9

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