Filr – Secure document library <= 1.2.3.5 - Authenticated (Author+) Arbitrary File Upload

8.8
Improper Control of Generation of Code ('Code Injection')
CVE CVE-2023-5762
CVSS 8.8 (High)
Publicly Published November 13, 2023
Last Updated September 4, 2026
Researcher Dmitrii Ignatyev - CleanTalk Inc

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 1.2.3.5 (inclusive). This makes it possible for authenticated attackers, with author-level or above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

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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 1.2.3.6, or a newer patched version
Affected Version
  • < 1.2.3.6
Patched Version
  • 1.2.3.6

Recent vulnerabilities in Filr – Secure document library

# Title CVE ID CVSS Researchers Date
1 Filr – Secure document library <= 1.2.13 - Authenticated (Contributor+) Arbitrary File Uploads CVE-2026-28133 8.8 Que Thanh Tuan February 26, 2026
2 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
3 Filr <= 1.2.10 - Authenticated (Contributor+) Arbitrary File Deletion CVE-2025-64230 8.1 Phat RiO August 17, 2025
4 Filr – Secure document library <= 1.2.4 - Authenticated (Editor+) Stored Cross-Site Scripting CVE-2024-43216 4.4 domiee13 August 9, 2024
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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