Super Forms <= 6.3.313 - Unauthenticated Arbitrary File Upload via 'data' Parameter (datauristring / value)
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Super Forms – Drag & Drop Form Builder | <= 6.3.313 | 6.3.314 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-434- Platform
- WordPress
- Package
Super Forms – Drag & Drop Form Builder- Disclosed
- 09.07.2026
- Updated
- 11.10.2026 10:23
Sources and licenses
Wordfence Intelligence - e9c7fb16-efbb-41e9-be13-98e96c1e9100 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Super Forms – Drag & Drop Form Builder
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 01.2021 10.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 5
- High 4
- Medium 1
Disclosures per year
- 2021: 1
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 8
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Super Forms <= 6.3.313 - Unauthenticated Arbitrary File Upload via 'data' Parameter (datauristring / value) this entry
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