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.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
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
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.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-15983 being exploited?
There is no known exploitation of CVE-2026-15983 in the wild and no public exploit code.
Sources
Also known as GHSA-5vqm-vx23-85p5.