Filr – Secure document library: Cross-site scripting
Filr – Secure document library is affected by cross-site scripting. Exploitation requires at least administrator-level access. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
- Component
- Filr – Secure document library
- Plugin slug
filr-protection- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Jan 17, 2026
This CVE was published Jan 17, 2026 and is one of 4 known issues for this plugin.
Update, patch or deactivate.
Update Filr – Secure document library to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N