SaturdayDrive Ninja Forms Plugin up to 3.3.26 on WordPress handle_upload unrestricted upload

Summaryinfo

A vulnerability was found in SaturdayDrive Ninja Forms Plugin up to 3.3.26 on WordPress. It has been classified as critical. The impacted element is the function NF_FU_AJAX_Controllers_Uploads::handle_upload. The manipulation leads to unrestricted upload. This vulnerability is listed as CVE-2026-0740. The attack may be initiated remotely. In addition, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in SaturdayDrive Ninja Forms Plugin up to 3.3.26 on WordPress and classified as critical. This issue affects the function NF_FU_AJAX_Controllers_Uploads::handle_upload. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was presented by Sélim Lanouar. It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-0740 since 01/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (52560), CNNVD (CNNVD-202604-1403) and EUVD (EUVD-2026-19572). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• SaturdayDrive

Name

• Ninja Forms Plugin

Version

• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.3.7
• 3.3.8
• 3.3.9
• 3.3.10
• 3.3.11
• 3.3.12
• 3.3.13
• 3.3.14
• 3.3.15
• 3.3.16
• 3.3.17
• 3.3.18
• 3.3.19
• 3.3.20
• 3.3.21
• 3.3.22
• 3.3.23
• 3.3.24
• 3.3.25
• 3.3.26

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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