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.
- 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-2026-17196?
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
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.
Sources
Also known as GHSA-r223-f6qv-r3gw.