PatchTheCVECVE-2026-0740: The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file uploads due to missing fil
CVE-2026-0740 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 62.9% (top 1%) |
| CISA exploited list | No |
| Weakness | CWE-434 |
| Published | 2026-04-07 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: 0xgh057r3c0n/CVE-2026-0740 (24 stars)
- GitHub PoC: xShadow-Here/CVE-2026-0740 (3 stars)
- GitHub PoC: MadExploits/ninja-form-exploit (3 stars)
- Exploit-DB: Ninja Forms Uploads - Unauthenticated PHP File Upload
- Nuclei scan template: Ninja Forms File Uploads <= 3.3.26 - Arbitrary File Upload
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-0740?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-0740 being exploited?
CVE-2026-0740 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-0740 affect?
CVE-2026-0740 affects affected software. Severity is critical (CVSS 9.8). 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. Th
How urgent is CVE-2026-0740?
Priority 72/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action