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

> Unauthenticated attackers can upload arbitrary files via the submit_form handler, potentially leading to remote code execution.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Jul 2026
- **Updated:** 10 Jul 2026
- **Also known as:** GHSA-f5f5-22mx-8h54

## What is CVE-2026-14894?

CVE-2026-14894 is a critical vulnerability in WebRehab Super Forms – Drag & Drop Form Builder, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2026-14894?


## How do I fix CVE-2026-14894?

No fix has been published for CVE-2026-14894 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14894 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14894 exists.

Public exploit code:

- Super Forms Unauthenticated File Upload RCE | CVSS 9.8 (github_poc): https://github.com/shinthink/CVE-2026-14894
- https://github.com/1beelze/CVE-2026-14894 (github_poc): https://github.com/1beelze/CVE-2026-14894
- Arbitrary File Upload Under  (github_poc): https://github.com/Nxploited/CVE-2026-14894
- WordPress Super Forms <= 6.3.313 - Arbitrary File Upload (nuclei): http/cves/2026/CVE-2026-14894.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14894 and fix it if it is affected.

What it is: CVE-2026-14894 is a critical vulnerability in WebRehab Super Forms – Drag & Drop Form Builder, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14894 exists.

Affected product: WebRehab Super Forms – Drag & Drop Form Builder. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-14894/ (Markdown: https://insights.sbomify.com/CVE-2026-14894/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14894
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14894
- OSV: https://osv.dev/vulnerability/CVE-2026-14894

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-14894/
Summaries are generated and may contain mistakes; the official description above is the record.