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

Improper Privilege Management
CVE CVE-2023-4140
CVSS Medium (6.6)
Publicly Published August 3, 2023
Last Updated January 22, 2024
Researcher István Márton
Description

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.

References

1 affected software package

Software Type Plugin
Software Slug wp-ultimate-csv-importer (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 7.9.8
Patched Version
  • 7.9.9
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