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Vulnerabilities

Vulnerability · CVE-2026-0740

ninjaforms ninja_forms_file_uploads Unrestricted Upload of File with Dangerous Type

Published Apr 6, 2026 · catalog updated Jun 17, 2026 · ninjaforms ninja_forms_file_uploads Unrestricted Upload

Patch now

CVE-2026-0740 is in the CISA known-exploited catalog. Confirm ninjaforms ninja_forms_file_uploads Unrestricted Upload against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (ninjaforms ninja_forms_file_uploads Unrestricted Upload).
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
62.90%
Remediation
Remediation guidance
Affected products
stated ninja_forms_file_uploads · vendor ninjaforms ninja_forms_file_uploads

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. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated ninja_forms_file_uploads<= 3.3.26
  • vendor ninjaforms ninja_forms_file_uploadsversion unspecified

How to fix CVE-2026-0740

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-0740 is in the CISA known-exploited catalog. Confirm ninjaforms ninja_forms_file_uploads Unrestricted Upload against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with <= 3.3.26. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-434: Unrestricted Upload of File with Dangerous Type. EPSS 62.90%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 6, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  2. Apr 7, 2026 · NIST NVD

    Detected

    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:

  3. Jun 17, 2026 · NIST NVD

    Updated

    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:

Sources

  • CVE.orgVulnerability recordCVE-2026-0740

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-0740

    30-day exploitation probability 62.9%

    first.org
  • NIST NVDVulnerability recordCVE-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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.