WebRehab Super Forms Plugin up to 6.3.316 on WordPress upload_files extensions unrestricted upload

Summaryinfo

A vulnerability marked as critical has been reported in WebRehab Super Forms Plugin up to 6.3.316. Affected by this issue is the function upload_files. Performing a manipulation of the argument extensions results in unrestricted upload. This vulnerability is identified as CVE-2026-17196. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in WebRehab Super Forms Plugin up to 6.3.316. This affects the function upload_files. The manipulation of the argument extensions with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Unrestricted File Type Upload in all versions up to, and including, 6.3.316 via the upload_files function. This is due to missing file type validation in the upload_files function, which reads and applies an attacker-controlled extensions string from _super_elements post meta verbatim as the allowed MIME type map. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. The attack requires a preceding step: poisoning the _super_elements post meta via the super_save_form AJAX handler, which lacks a capability and nonce check but requires the attacker to be authenticated as at minimum a Subscriber-level user; the subsequent file upload via super_upload_files requires no authentication at all.

It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-17196 since 07/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/08/2026). The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• WebRehab

Name

• Super Forms Plugin

Version

• 6.3.316

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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