CRITICAL CWE-434
CVE-2026-0740
Ninja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload
SaturdayDrive·Ninja Forms - File Uploads
9.8/ 10
CVSS 3.1
Critical severity
63%
EPSS exploit odds
Chance of exploitation in the next 30 days
Higher than 99.2% of all CVEs
Not listed
CISA KEV catalog
No confirmed in-the-wild exploitation on CISA's list.
Timeline
- Published
- Apr 7, 2026
- Updated
- Apr 8, 2026
- First covered
- Jul 11, 2026
- Latest story
- 4 months ago
Summary
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.
CWE-434Unrestricted Upload of File with Dangerous Type
Attack profile
Attack vectorNetwork
ComplexityLow
PrivilegesNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
- SaturdayDrive Ninja Forms - File Uploadsup to 3.3.26