CVE-2026-0740
CriticalExploitedPublic exploitNinja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload
Published Apr 7, 2026 · Updated Apr 8, 2026 · Also known as 0b606ded-ab50-486a-9337-97ee9f452f12
Key Facts
Patch immediately- CVE-2026-0740 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting ninja-forms-uploads (wordpress-plugin), Ninja Forms - File Uploads.
- It is exploited in the wild, listed in Industry KEV feed since Apr 6, 2026. Public exploit code is available.
- EPSS estimates a 63% probability of exploitation in the next 30 days.
- Fixed versions are available, including ninja-forms-uploads 3.3.27.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
63%
Higher than 99.1% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-0740 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 6, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ninja-forms-uploadswordpress-plugin | See advisory | 3.3.27 |
| Ninja Forms - File Uploads | See advisory | n/a |
Patched Releases
ninja-forms-uploads
3.3.27
Timeline
Added to Industry KEV feed
Apr 6, 2026
Publicly disclosed
Apr 7, 2026
Last updated
Apr 8, 2026
Weakness Type
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/0b606ded-ab50-486a-9337-97ee9f452f12?source=api-prod
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/0b606ded-ab50-486a-9337-97ee9f452f12?source=api-scan
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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.
Affected: ninja-forms-uploads (wordpress-plugin); Ninja Forms - File Uploads. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Apr 6, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including ninja-forms-uploads 3.3.27.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-0740 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo