# CVE-2026-15983: Super Forms <= 6.3.316 - Authenticated (Subscriber+) Arbitrary File/Directory Deletion via 'subdir' / 'path' Parameter

> Authenticated subscribers can delete arbitrary files via path traversal, causing site takedown or potential code execution.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:** 1 Oct 2026
- **Updated:** 3 Oct 2026
- **Also known as:** GHSA-5vqm-vx23-85p5

## What is CVE-2026-15983?

CVE-2026-15983 is a high-severity path traversal vulnerability in WebRehab Super Forms – Drag & Drop Form Builder, published on 1 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 Arbitrary File/Directory Deletion in all versions up to, and including, 6.3.316. This is due to the `super_save_form` AJAX handler performing no capability check — allowing Subscriber-level authenticated users to create or modify Super Forms and enable the `file_upload_submission_delete` setting — combined with the `super_submit_form` handler's `submit_form` function passing the attacker-controlled `files[].subdir` value from `$_POST['data']` directly into `SUPER_Common::delete_dir()` without sanitization, and a trivially bypassed `ABSPATH` guard that a `subdir` value of `wp-config.php` defeats because `dirname(realpath(ABSPATH . $subdir))` resolves to the WordPress root while the naive `ABSPATH !== $dir` string check fails to match due to a trailing-slash mismatch. This makes it possible for authenticated attackers, with Subscriber-level access and above, to recursively delete arbitrary files and directories on the server, up to and including the entire WordPress installation, resulting in full site takedown and potential remote code execution if critical files such as `wp-config.php` are removed and the site is subsequently re-installed by another party.

Weakness: CWE-73 (External Control of File Name or Path)

## Which versions are affected by CVE-2026-15983?


## How do I fix CVE-2026-15983?

No fix has been published for CVE-2026-15983 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15983 being exploited?

There is no known exploitation of CVE-2026-15983 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15983 and fix it if it is affected.

What it is: CVE-2026-15983 is a high-severity path traversal vulnerability in WebRehab Super Forms – Drag & Drop Form Builder, published on 1 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-2026-15983 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-2026-15983/ (Markdown: https://insights.sbomify.com/CVE-2026-15983/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15983
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15983
- OSV: https://osv.dev/vulnerability/CVE-2026-15983

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15983/
Summaries are generated and may contain mistakes; the official description above is the record.