Super Forms – Drag & Drop Form Builder: Dangerous file upload
Super Forms – Drag & Drop Form Builder is affected by dangerous file upload. The vulnerable path is reachable without authentication. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise. The published affected range is <= 6.3.313.
- Component
- Super Forms – Drag & Drop Form Builder
- Plugin slug
super-forms-drag-drop-form-builder- Affected
- <= 6.3.313
- Safe version
- See mitigation notes
- Published
- Jul 10, 2026
This CVE was published Jul 10, 2026 and is one of 2 known issues for this plugin.
Update, patch or deactivate.
No fixed release is identified. Update Super Forms – Drag & Drop Form Builder when a release after 6.3.313 becomes available; until then, disable and remove it when the site's risk warrants.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 6.3.313 via the submit_form function. This is due to missing file type validation and the absence of any capability check on the submit_form nopriv AJAX handler, whose only barrier is a session nonce freely obtainable by unauthenticated visitors via a separate nopriv endpoint. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. The nonce requirement is trivially bypassed because the super_create_nonce nopriv AJAX action allows any unauthenticated visitor to mint a valid sf_nonce and session cookie in a single prior request, reducing exploitation to two unauthenticated HTTP requests.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H