What is CVE-2026-0740?

CVE-2026-0740 is a critical-severity vulnerability in Saturdaydrive Ninja Forms - File Uploads, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-04-07.

How severe is CVE-2026-0740?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-0740 known to be exploited?

11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Saturdaydrive Ninja Forms - File Uploads

CVE-2026-0740

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.

Vulnerability class: Unrestricted File Upload

EPSS: 0.629 (99.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Saturdaydrive Ninja Forms - File Uploads — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-0740?: CVE-2026-0740 is a critical-severity vulnerability in Saturdaydrive Ninja Forms - File Uploads, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-04-07.
How severe is CVE-2026-0740?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-0740 known to be exploited?: 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.