Ninja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload
99Vexday Risk Score
Patch now. It exploitation observed by VulnCheck and has a working public exploit.
ssvc Actcvss 9.8epss 63%
from disclosure to weapon0 days
Published on NVDApr 7
1st PoCApr 7
VulnCheckApr 6
exploitation probability
63%top 1% of all CVEs
observed exploitation
yesVulnCheck
15 public exploit(s)
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
SaturdayDrive · Ninja Forms - File Uploadspublic PoCs found — 15
exploitdbwww.exploit-db.com/exploits/52560unverifiedgithubgithub.com/0xgh057r3c0n/CVE-2026-0740★ 23githubgithub.com/MadExploits/ninja-form-exploit★ 3githubgithub.com/whattheslime/CVE-2026-0740★ 1githubgithub.com/ExDev994/CVE-2026-0740-mass★ 1githubgithub.com/a24ac1/CVE-2026-0740★ 0githubgithub.com/BastianXploited/CVE-2026-0740-mass★ 0vulncheckvulncheck.com/xdb/8b7b147f29bdunverifiedvulncheckvulncheck.com/xdb/76bab0bbd01aunverifiedvulncheckvulncheck.com/xdb/2603591d1974unverifiedvulncheckvulncheck.com/xdb/b85dfc2ab28aunverifiedvulncheckvulncheck.com/xdb/16915ca512efunverifiedvulncheckvulncheck.com/xdb/fb44963cafe3unverifiedvulncheckvulncheck.com/xdb/0dfba5443a8aunverifiedvulncheckvulncheck.com/xdb/16e211649e58unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.