Ninja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload

9.8
Unrestricted Upload of File with Dangerous Type
CVE CVE-2026-0740
CVSS 9.8 (Critical)
Publicly Published April 6, 2026
Last Updated April 7, 2026
Researcher Sélim Lanouar (whattheslime)

Description

The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'NF_FU_AJAX_Controllers_Uploads::handle_upload' function in all versions up to, and including, 3.3.26. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: The vulnerability was partially patched in version 3.3.25 and fully patched in version 3.3.27.

Wordfence blocked 12,254 attacks targeting this vulnerability in the past 24 hours.

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

References

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Vulnerability Details for Ninja Forms - File Uploads

Software Type Plugin
Software Slug ninja-forms-uploads
Patched? Yes
Remediation Update to version 3.3.27, or a newer patched version
Affected Version
  • <= 3.3.26
Patched Version
  • 3.3.27

Recent vulnerabilities in Ninja Forms - File Uploads

# Title CVE ID CVSS Researchers Date
1 Ninja Forms - File Uploads <= 3.3.29 - Missing Authorization to Unauthenticated Log Disclosure and Deletion via debug-log/delete-all and debug-log/get-all REST Endpoints CVE-2026-12557 5.3 Ad4m5 July 2, 2026
2 Ninja Forms - File Uploads <= 3.3.29 - Unauthenticated Arbitrary File Read via File Upload Field 'files[].data.file_path' Parameter CVE-2026-13369 7.5 daroo July 1, 2026
3 Ninja Forms File Uploads <= 3.3.16 - Unauthenticated Stored Cross-Site Scripting via File Upload CVE-2024-1596 7.2 wesley (wcraft) September 6, 2024
4 Ninja Forms - File Uploads Extension <= 3.3.12 - Reflected Cross-Site Scripting CVE-2022-0889 7.2 Nuno Correia (Blaze Security), Muhammad Zeeshan (Xib3rR4dAr) November 20, 2021
5 Ninja Forms - File Uploads Extension <= 3.3.0 - Arbitrary File Upload CVE-2022-0888 9.8 Muhammad Zeeshan (Xib3rR4dAr) March 20, 2020
6 Ninja Forms - File Uploads <= 3.0.22 - Unauthenticated Arbitrary File Upload CVE-2019-10869 8.1 Jasper Weijts April 11, 2019

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