CVE-2026-0740 Ninja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload
Unauthenticated attackers can upload arbitrary files via missing validation, potentially leading to remote code execution on WordPress sites using this plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0740?
CVE-2026-0740 is a critical vulnerability in SaturdayDrive Ninja Forms - File Uploads, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-434
Which versions are affected by CVE-2026-0740?
How do I fix CVE-2026-0740?
No fix has been published for CVE-2026-0740 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-0740 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0740 exists.
Public exploit code: 1 Exploit-DB entry, 1 Nuclei template and 8 proofs of concept on GitHub.
Sources
Also known as GHSA-v8wq-rjpf-669f.