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.
Metrics
CVSS 3.1 4.4/10
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| wpchill | Filr – Secure document library | <= 1.2.11 |
References
- https://plugins.trac.wordpress.org/browser/filr-protection/tags/1.2.10/src/class-filr-uploader.php#L14
- https://plugins.trac.wordpress.org/browser/filr-protection/trunk/src/class-filr-uploader.php#L14
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3425333%40filr-protection&new=3425333%40filr-protection&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c16c3a8d-bae1-4729-86c8-ec13481ff187?source=cve
Timeline
- Published
- Jan 17, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Deferred