Vulnerability intelligence

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.

CVSS Score

9.8

Critical

EPSS — Exploit Probability

54%

Riskier than 99% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Apr 8, 2026 · latest Apr 8, 2026

Coverage timeline

Hackers Targeting Ninja Forms Bug That Exposes WordPress Sites to Takeover
www.securityweek.com · Apr 8, 2026