CVE-2026-17609 Super Forms <= 6.3.316 - Unauthenticated Arbitrary Directory Deletion via 'data[...][files][][subdir]' Parameter
Unauthenticated attackers can delete arbitrary directories, including the WordPress root, if the file deletion setting is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17609?
CVE-2026-17609 is a critical path traversal vulnerability in WebRehab Super Forms – Drag & Drop Form Builder, published on 8 Oct 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 Directory Deletion in all versions up to, and including, 6.3.316 via the submit_form function. This is due to insufficient validation of attacker-controlled JSON field declarations against the actual form schema, combined with a non-effective ABSPATH guard that dirname() trivially bypasses by stripping the trailing slash. This makes it possible for unauthenticated attackers to recursively delete arbitrary directories on the server, including the WordPress root directory. Exploitation requires that an administrator has enabled the 'Delete files from server after form submissions' setting, though this is a documented and commonly-enabled feature.
Weakness: CWE-434
Which versions are affected by CVE-2026-17609?
How do I fix CVE-2026-17609?
No fix has been published for CVE-2026-17609 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-2026-17609 being exploited?
There is no known exploitation of CVE-2026-17609 in the wild and no public exploit code.
Sources
Also known as GHSA-pchj-gc42-gqq7.