Vulnerability · Published Apr 7, 2026 · Assigned by Wordfence
CVE-2026-0740Ninja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload
Critical 9.8
In plain English
A critical-severity unrestricted file upload in Ninja Forms - File Uploads from SaturdayDrive. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 62.9% (higher than 99.2% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SaturdayDrive | Ninja Forms - File Uploads | 0 – through 3.3.26 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H