# CVE-2026-17196: Super Forms <= 6.3.316 - Authenticated (Subscriber+) Arbitrary File Upload via 'extensions' Form Element Attribute

> Authenticated attackers can upload executable files via the Super Forms plugin, leading to remote code execution.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Oct 2026
- **Updated:** 8 Oct 2026
- **Also known as:** GHSA-r223-f6qv-r3gw

## What is CVE-2026-17196?

CVE-2026-17196 is a high-severity vulnerability in WebRehab Super Forms – Drag & Drop Form Builder, published on 8 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

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.

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

## Which versions are affected by CVE-2026-17196?


## How do I fix CVE-2026-17196?

No fix has been published for CVE-2026-17196 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-17196 being exploited?

There is no known exploitation of CVE-2026-17196 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-17196 and fix it if it is affected.

What it is: CVE-2026-17196 is a high-severity vulnerability in WebRehab Super Forms – Drag & Drop Form Builder, published on 8 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-17196 in the wild and no public exploit code.

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-2026-17196/ (Markdown: https://insights.sbomify.com/CVE-2026-17196/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-17196
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-17196
- OSV: https://osv.dev/vulnerability/CVE-2026-17196

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-17196/
Summaries are generated and may contain mistakes; the official description above is the record.