Filr – Secure document library <= 1.2.13 - Authenticated (Contributor+) Arbitrary File Uploads

8.8
Unrestricted Upload of File with Dangerous Type
CVE CVE-2026-28133
CVSS 8.8 (High)
Publicly Published February 26, 2026
Last Updated June 18, 2026
Researcher Que Thanh Tuan

Description

The Filr – Secure document library plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.2.13. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.

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Vulnerability Details for Filr – Secure document library

Software Type Plugin
Software Slug filr-protection (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.2.14, or a newer patched version
Affected Version
  • <= 1.2.13
Patched Version
  • 1.2.14

Recent vulnerabilities in Filr – Secure document library

# Title CVE ID CVSS Researchers Date
1 Filr – Secure document library <= 1.2.11 - Authenticated (Administrator+) Stored Cross-Site Scripting via HTML Upload CVE-2025-14632 4.4 Phap Nguyen Anh January 16, 2026
2 Filr <= 1.2.10 - Authenticated (Contributor+) Arbitrary File Deletion CVE-2025-64230 8.1 Phat RiO August 17, 2025
3 Filr – Secure document library <= 1.2.4 - Authenticated (Editor+) Stored Cross-Site Scripting CVE-2024-43216 4.4 domiee13 August 9, 2024
4 Filr – Secure document library <= 1.2.3.5 - Authenticated (Author+) Arbitrary File Upload CVE-2023-5762 8.8 Dmitrii Ignatyev November 13, 2023
5 Freemius SDK <= 2.5.9 - Reflected Cross-Site Scripting via fs_request_get CVE-2023-33999 6.1 Rafie Muhammad July 18, 2023
6 Filr – Secure document library <= 1.2.2 - Missing Authorization CVE-2022-1777 6.4 dc11 May 23, 2022
7 Freemius SDK <= 2.4.2 - Missing Authorization Checks CVE-2022-4974 6.3 March 4, 2022

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