Description
The Filr – Secure document library plugin for WordPress is vulnerable to Stored Cross-Site Scripting via unrestricted file upload in all versions up to, and including, 1.2.11 due to insufficient file type restrictions in the FILR_Uploader class. This makes it possible for authenticated attackers, with Administrator-level access and above, to upload malicious HTML files containing JavaScript that will execute whenever a user accesses the uploaded file, granted they have permission to create or edit posts with the 'filr' post type.
Problem types
CWE-434 Unrestricted Upload of File with Dangerous Type
Product status
* (semver)
Timeline
| 2025-12-12: | Vendor Notified |
| 2026-01-16: | Disclosed |
Credits
Phap Nguyen Anh
References
www.wordfence.com/...-bae1-4729-86c8-ec13481ff187?source=cve
plugins.trac.wordpress.org/...nk/src/class-filr-uploader.php
plugins.trac.wordpress.org/...10/src/class-filr-uploader.php
plugins.trac.wordpress.org/...otection&sfp_email=&sfph_mail=