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.
CVE-2026-0740 is a critical severity with CVSS 9.8 Remote Code Execution issue affecting the Plugin Ninja Forms - File Uploads. It affects Versions up to 3.3.26 and is fixed in 3.3.27.
Use the related hub and response guides to connect this CVE-2026-0740 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-0740 is tracked for the Plugin Ninja Forms - File Uploads as critical severity with CVSS 9.8. The affected range is Versions up to 3.3.26. Update Ninja Forms - File Uploads to 3.3.27 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 3.3.26.
Confirm Ninja Forms - File Uploads is updated to 3.3.27 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
ninja-forms-uploads
View on wordpress.org
|
| CVE | CVE-2026-0740 |
| Patched Versions |
3.3.27
|
| Affected Versions |
Versions up to 3.3.26
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Ninja Forms - File Uploads Extension <= 3.3.0 - Arbitrary File Upload
Ninja Forms - File Uploads <= 3.0.22 - Unauthenticated Arbitrary File Upload
Ninja Forms File Uploads <= 3.3.16 - Unauthenticated Stored Cross-Site Scripting via File Upload
Ninja Forms - File Uploads Extension <= 3.3.12 - Reflected Cross-Site Scripting
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