WP Ultimate CSV Importer <= 9.1 - Unauthenticated Sensitive Information Exposure via Import Files and Logs
- ID
- WPSEC-2026-0106
- Plugin
- WP Ultimate CSV Importer – WordPress CSV, XML & Excel Import Export (wp-ultimate-csv-importer)
- Affected
- all versions before 9.2
- Remediation
- Update to 9.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness
- CWE-552
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-22
- Attack surface
- WP Ultimate CSV Importer on WPSec AttackSurface
- Fix released
- Published
Description
The WP Ultimate CSV Importer plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 9.1. This is due to uploaded import files and the import, media and failed-media log CSVs being stored in publicly accessible subdirectories of wp-content/uploads/smack_uci_uploads/ without access restrictions, under a key derived from the file name and the current time with a hardcoded HMAC key. Versions 9.0 and 9.1 also write these keys to a benchmark log at /var/www/html/antony.log, which is web-accessible on installations whose document root is /var/www/html. This makes it possible for unauthenticated attackers who can predict or obtain an import key to download imported data and import logs.
References
- https://wpsec.com/vuln/WPSEC-2026-0106/
- https://plugins.svn.wordpress.org/wp-ultimate-csv-importer/tags/9.2/
- https://wordpress.org/plugins/wp-ultimate-csv-importer/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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