What’s Vulnerable › Vulnerabilities
CVE-2023-4140: WP Ultimate CSV Importer <= 7.9.8 - Arbitrary Usermeta Update to Authenticated (Author+) Privilege Escalation
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.8% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-08-04 · updated 2026-06-17
- Weakness: CWE-269
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.
Affected products
References
- https://plugins.trac.wordpress.org/browser/wp-ultimate-csv-importer/tags/7.9.6/importExtensions/ImportHelpers.php#L205
- https://plugins.trac.wordpress.org/changeset/2944635/wp-ultimate-csv-importer/trunk/wp-ultimate-csv-importer.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5fdba41f-daa5-44e8-bc47-aa8b7bd31054?source=cve
- https://plugins.trac.wordpress.org/browser/wp-ultimate-csv-importer/tags/7.9.6/importExtensions/ImportHelpers.php#L205
- https://plugins.trac.wordpress.org/changeset/2944635/wp-ultimate-csv-importer/trunk/wp-ultimate-csv-importer.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5fdba41f-daa5-44e8-bc47-aa8b7bd31054?source=cve
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